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DTC P1708:24 [BODY CONTROL MODULE (BCM)]

id0902r7093400

Outline

System malfunction location

Starter interlock switch circuit malfunction

Detection condition

•  The body control module (BCM) detects an open circuit in the starter interlock switch circuit for a continuous 5 times.

Fail-safe

•  Change to the back-up mode.

Possible cause

•  DTCs are stored in the PCM.

―  Clutch stroke sensor malfunction

―  PCM malfunction

•  Starter interlock switch connector or terminal malfunction

•  Open circuit in starter interlock switch ground circuit

•  Starter interlock switch malfunction

•  Body control module (BCM) connector or terminal malfunction

•  Open circuit in starter interlock switch signal circuit

•  Body control module (BCM) malfunction

System malfunction location	Starter interlock switch circuit malfunction
Detection condition	• The body control module (BCM) detects an open circuit in the starter interlock switch circuit for a continuous 5 times.
Fail-safe	• Change to the back-up mode.
Possible cause	• DTCs are stored in the PCM. ― Clutch stroke sensor malfunction ― PCM malfunction • Starter interlock switch connector or terminal malfunction • Open circuit in starter interlock switch ground circuit • Starter interlock switch malfunction • Body control module (BCM) connector or terminal malfunction • Open circuit in starter interlock switch signal circuit • Body control module (BCM) malfunction

Diagnostic Procedure

Step

Inspection

Results

Action

1

VERIFY BODY CONTROL MODULE (BCM) DTCs AGAIN

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

•  Switch the ignition ON (engine off or on).

•  Perform the following work 5 times or more.

―  Depress the clutch pedal for 0.5 s or more.

―  Release the clutch pedal for 0.5 s or more.

•  Perform the DTC inspection for the body control module (BCM).
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Go to the next step.

No

Go to repair completion verification 2.

2

VERIFY PCM DTCs

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

•  Is a DTC displayed?

Yes

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

(See DTC TABLE [PCM (SKYACTIV-G (E))].)

(See DTC TABLE [PCM (SKYACTIV-D)].)

(See DTC TABLE [PCM (SKYACTIV-X)].)

No

Go to the next step.

3

INSPECT STARTER INTERLOCK SWITCH 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.

4

INSPECT STARTER INTERLOCK SWITCH GROUND CIRCUIT FOR OPEN CIRCUIT

•  Inspect the applicable circuit for an open circuit.
(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.

5

INSPECT STARTER INTERLOCK SWITCH FOR MALFUNCTION

•  Inspect the applicable part.
(See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-D 1.8].)

(See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

(See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))].)

(See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-X 2.0].)

•  Is the part normal?

Yes

Go to the next step.

No

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

(See STARTER INTERLOCK SWITCH REMOVAL/INSTALLATION [C66M-R].)

(See STARTER INTERLOCK SWITCH REMOVAL/INSTALLATION [C66M-R, C66MX-R].)

6

INSPECT BODY CONTROL MODULE (BCM) 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.

7

INSPECT STARTER INTERLOCK SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT

•  Inspect the applicable circuit for an open circuit.
(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.

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.)

•  Switch the ignition ON (engine off or on).

•  Perform the following work 5 times or more.

―  Depress the clutch pedal for 0.5 s or more.

―  Release the clutch pedal for 0.5 s or more.

•  Perform the DTC inspection for the body control module (BCM).
(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 body control module (BCM), then go to the next step.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTC IS DISPLAYED

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

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	VERIFY BODY CONTROL MODULE (BCM) DTCs AGAIN • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Switch the ignition ON (engine off or on). • Perform the following work 5 times or more. ― Depress the clutch pedal for 0.5 s or more. ― Release the clutch pedal for 0.5 s or more. • Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Go to the next step.
1		No	Go to repair completion verification 2.
2	VERIFY PCM DTCs • Perform the DTC inspection for the PCM. (See DTC INSPECTION.) • Is a DTC displayed?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification. (See DTC TABLE [PCM (SKYACTIV-G (E))].) (See DTC TABLE [PCM (SKYACTIV-D)].) (See DTC TABLE [PCM (SKYACTIV-X)].)
2		No	Go to the next step.
3	INSPECT STARTER INTERLOCK SWITCH CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT STARTER INTERLOCK SWITCH GROUND CIRCUIT FOR OPEN CIRCUIT • Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT STARTER INTERLOCK SWITCH FOR MALFUNCTION • Inspect the applicable part. (See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-D 1.8].) (See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].) (See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))].) (See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-X 2.0].) • Is the part normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See STARTER INTERLOCK SWITCH REMOVAL/INSTALLATION [C66M-R].) (See STARTER INTERLOCK SWITCH REMOVAL/INSTALLATION [C66M-R, C66MX-R].)
6	INSPECT BODY CONTROL MODULE (BCM) CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT STARTER INTERLOCK SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT • Inspect the applicable circuit for an open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
7		No	Repair or replace the malfunctioning location and perform the repair completion verification.
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.) • Switch the ignition ON (engine off or on). • Perform the following work 5 times or more. ― Depress the clutch pedal for 0.5 s or more. ― Release the clutch pedal for 0.5 s or more. • Perform the DTC inspection for the body control module (BCM). (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 body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.