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DTC B1038:11 [DASH-ELECTRICAL SUPPLY UNIT (E)]

id0702k80009ka

Without Position Memory System (L.H.D.)

Outline

System malfunction location

Seat warmer unit (LH) circuit malfunction (Thermistor side)

Detection condition

•  The dash-electrical supply unit detects a short to ground in the seat warmer unit (LH) circuit.

Fail-safe

•  Stops the driver and front passenger’s seat warmer output.

Possible cause

•  Seat warmer control unit connector or terminal malfunction

•  Connector C-61 malfunction

•  Short to ground in seat warmer unit (LH) signal circuit

•  Front seat (LH) malfunction

―  Seat warmer unit (LH) malfunction

•  Seat warmer control unit malfunction

•  Dash-electrical supply unit malfunction

System malfunction location	Seat warmer unit (LH) circuit malfunction (Thermistor side)
Detection condition	• The dash-electrical supply unit detects a short to ground in the seat warmer unit (LH) circuit.
Fail-safe	• Stops the driver and front passenger’s seat warmer output.
Possible cause	• Seat warmer control unit connector or terminal malfunction • Connector C-61 malfunction • Short to ground in seat warmer unit (LH) signal circuit • Front seat (LH) malfunction ― Seat warmer unit (LH) malfunction • Seat warmer control unit malfunction • Dash-electrical supply unit malfunction

Diagnostic procedure

Step

Inspection

Results

Action

1

INSPECT SEAT WARMER CONTROL UNIT CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

2

INSPECT CONNECTOR C-61 FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

3

INSPECT SEAT WARMER UNIT (LH) SIGNAL CIRCUIT FOR SHORT TO GROUND

•  Inspect the applicable circuit for a short to ground.
(See CIRCUIT INSPECTION.)

•  Is the circuit normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

4

INSPECT SEAT WARMER UNIT (LH) FOR MALFUNCTION

•  Verify that the connector C-61 is disconnected.

•  Inspect for continuity between connector C-61 (seat (LH) harness-side) terminal 6D (wiring harness-side) and body ground.

•  Is there continuity?

Yes

Repair or replace the malfunctioning location and perform the repair completion verification.

(See FRONT SEAT REMOVAL/INSTALLATION [(E)].)

No

Go to the next step.

5

INSPECT SEAT WARMER CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the dash-electrical supply unit.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification.

(See SEAT WARMER CONTROL UNIT REMOVAL/INSTALLATION [(E)].)

No

Go to repair completion verification 2.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the dash-electrical supply unit.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step.
(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)

(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTCs DISPLAYED

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	INSPECT SEAT WARMER CONTROL UNIT CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
2	INSPECT CONNECTOR C-61 FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT SEAT WARMER UNIT (LH) SIGNAL CIRCUIT FOR SHORT TO GROUND • Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT SEAT WARMER UNIT (LH) FOR MALFUNCTION • Verify that the connector C-61 is disconnected. • Inspect for continuity between connector C-61 (seat (LH) harness-side) terminal 6D (wiring harness-side) and body ground. • Is there continuity?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification. (See FRONT SEAT REMOVAL/INSTALLATION [(E)].)
No	Go to the next step.
5	INSPECT SEAT WARMER CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification. (See SEAT WARMER CONTROL UNIT REMOVAL/INSTALLATION [(E)].)
No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step. (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
No	DTC troubleshooting completed.

With Position Memory System (L.H.D.)

Outline

System malfunction location

Seat warmer unit (LH) circuit malfunction (Thermistor side)

Detection condition

•  The dash-electrical supply unit detects a short to ground in the seat warmer unit (LH) circuit.

Fail-safe

•  Stops the driver and front passenger’s seat warmer output.

Possible cause

•  Seat warmer control unit connector or terminal malfunction

•  Front seat (LH) malfunction

―  Short to ground in seat warmer unit (LH) signal circuit

―  Seat warmer unit (LH) malfunction

•  Seat warmer control unit malfunction

•  Dash-electrical supply unit malfunction

System malfunction location	Seat warmer unit (LH) circuit malfunction (Thermistor side)
Detection condition	• The dash-electrical supply unit detects a short to ground in the seat warmer unit (LH) circuit.
Fail-safe	• Stops the driver and front passenger’s seat warmer output.
Possible cause	• Seat warmer control unit connector or terminal malfunction • Front seat (LH) malfunction ― Short to ground in seat warmer unit (LH) signal circuit ― Seat warmer unit (LH) malfunction • Seat warmer control unit malfunction • Dash-electrical supply unit malfunction

Diagnostic procedure

Step

Inspection

Results

Action

1

INSPECT SEAT WARMER CONTROL UNIT CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

2

INSPECT SEAT WARMER UNIT (LH) AND SEAT WARMER UNIT (LH) SIGNAL CIRCUIT FOR MALFUNCTION

•  Verify that the seat warmer control unit connector is disconnected.

•  Inspect for continuity between seat warmer control unit terminal 2O (wiring harness-side) and body ground.

•  Is there continuity?

Yes

Repair or replace the malfunctioning location and perform the repair completion verification.

(See FRONT SEAT REMOVAL/INSTALLATION [(E)].)

No

Go to the next step.

3

INSPECT SEAT WARMER CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the dash-electrical supply unit.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification.

(See POSITION MEMORY CONTROL MODULE REMOVAL/INSTALLATION [(E)].)

No

Go to repair completion verification 2.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the dash-electrical supply unit.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step.
(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)

(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTCs DISPLAYED

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	INSPECT SEAT WARMER CONTROL UNIT CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
2	INSPECT SEAT WARMER UNIT (LH) AND SEAT WARMER UNIT (LH) SIGNAL CIRCUIT FOR MALFUNCTION • Verify that the seat warmer control unit connector is disconnected. • Inspect for continuity between seat warmer control unit terminal 2O (wiring harness-side) and body ground. • Is there continuity?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification. (See FRONT SEAT REMOVAL/INSTALLATION [(E)].)
No	Go to the next step.
3	INSPECT SEAT WARMER CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification. (See POSITION MEMORY CONTROL MODULE REMOVAL/INSTALLATION [(E)].)
No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step. (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
No	DTC troubleshooting completed.

Without Position Memory System (R.H.D.)

Outline

System malfunction location

Seat warmer unit (LH) circuit malfunction (Thermistor side)

Detection condition

•  The dash-electrical supply unit detects a short to ground in the seat warmer unit (LH) circuit.

Fail-safe

•  Stops the driver and front passenger’s seat warmer output.

Possible cause

•  Seat warmer control unit connector or terminal malfunction

•  Front seat (LH) malfunction

―  Short to ground in seat warmer unit (LH) signal circuit

―  Seat warmer unit (LH) malfunction

•  Seat warmer control unit malfunction

•  Dash-electrical supply unit malfunction

System malfunction location	Seat warmer unit (LH) circuit malfunction (Thermistor side)
Detection condition	• The dash-electrical supply unit detects a short to ground in the seat warmer unit (LH) circuit.
Fail-safe	• Stops the driver and front passenger’s seat warmer output.
Possible cause	• Seat warmer control unit connector or terminal malfunction • Front seat (LH) malfunction ― Short to ground in seat warmer unit (LH) signal circuit ― Seat warmer unit (LH) malfunction • Seat warmer control unit malfunction • Dash-electrical supply unit malfunction

Diagnostic procedure

Step

Inspection

Results

Action

1

INSPECT SEAT WARMER CONTROL UNIT CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

2

INSPECT SEAT WARMER UNIT (LH) AND SEAT WARMER UNIT (LH) SIGNAL CIRCUIT FOR MALFUNCTION

•  Verify that the seat warmer control unit connector is disconnected.

•  Inspect for continuity between seat warmer control unit terminal 2O (wiring harness-side) and body ground.

•  Is there continuity?

Yes

Repair or replace the malfunctioning location and perform the repair completion verification.

(See FRONT SEAT REMOVAL/INSTALLATION [(E)].)

No

Go to the next step.

3

INSPECT SEAT WARMER CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the dash-electrical supply unit.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification.

(See SEAT WARMER CONTROL UNIT REMOVAL/INSTALLATION [(E)].)

No

Go to repair completion verification 2.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the dash-electrical supply unit.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step.
(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)

(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTCs DISPLAYED

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	INSPECT SEAT WARMER CONTROL UNIT CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
2	INSPECT SEAT WARMER UNIT (LH) AND SEAT WARMER UNIT (LH) SIGNAL CIRCUIT FOR MALFUNCTION • Verify that the seat warmer control unit connector is disconnected. • Inspect for continuity between seat warmer control unit terminal 2O (wiring harness-side) and body ground. • Is there continuity?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification. (See FRONT SEAT REMOVAL/INSTALLATION [(E)].)
No	Go to the next step.
3	INSPECT SEAT WARMER CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification. (See SEAT WARMER CONTROL UNIT REMOVAL/INSTALLATION [(E)].)
No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step. (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
No	DTC troubleshooting completed.

With Position Memory System (R.H.D.)

Outline

System malfunction location

Seat warmer unit (LH) circuit malfunction (Thermistor side)

Detection condition

•  The dash-electrical supply unit detects a short to ground in the seat warmer unit (LH) circuit.

Fail-safe

•  Stops the driver and front passenger’s seat warmer output.

Possible cause

•  Seat warmer control unit connector or terminal malfunction

•  Connector C-62 malfunction

•  Short to ground in seat warmer unit (LH) signal circuit

•  Front seat (LH) malfunction

―  Seat warmer unit (LH) malfunction

•  Seat warmer control unit malfunction

•  Dash-electrical supply unit malfunction

System malfunction location	Seat warmer unit (LH) circuit malfunction (Thermistor side)
Detection condition	• The dash-electrical supply unit detects a short to ground in the seat warmer unit (LH) circuit.
Fail-safe	• Stops the driver and front passenger’s seat warmer output.
Possible cause	• Seat warmer control unit connector or terminal malfunction • Connector C-62 malfunction • Short to ground in seat warmer unit (LH) signal circuit • Front seat (LH) malfunction ― Seat warmer unit (LH) malfunction • Seat warmer control unit malfunction • Dash-electrical supply unit malfunction

Diagnostic procedure

Step

Inspection

Results

Action

1

INSPECT SEAT WARMER CONTROL UNIT CONNECTOR FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

2

INSPECT CONNECTOR C-62 FOR MALFUNCTION

•  Inspect the applicable connector and terminal.
(See CONNECTOR INSPECTION.)

•  Are the connector and terminal normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

3

INSPECT SEAT WARMER UNIT (LH) SIGNAL CIRCUIT FOR SHORT TO GROUND

•  Inspect the applicable circuit for a short to ground.
(See CIRCUIT INSPECTION.)

•  Is the circuit normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

4

INSPECT SEAT WARMER UNIT (LH) FOR MALFUNCTION

•  Verify that the connector C-62 is disconnected.

•  Inspect for continuity between connector C-62 (seat (LH) harness-side) terminal 6D (wiring harness-side) and body ground.

•  Is there continuity?

Yes

Repair or replace the malfunctioning location and perform the repair completion verification.

(See FRONT SEAT REMOVAL/INSTALLATION [(E)].)

No

Go to the next step.

5

INSPECT SEAT WARMER CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the dash-electrical supply unit.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification.

(See POSITION MEMORY CONTROL MODULE REMOVAL/INSTALLATION [(E)].)

No

Go to repair completion verification 2.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the dash-electrical supply unit.
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step.
(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)

(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTCs DISPLAYED

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.