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DTC P2796:00 [TCM (ET6A-EL, ET6AX-EL) (E)]

id0502q98322r2

Outline

System malfunction location	Electric AT oil pump/Electric AT oil pump relay circuit malfunction
Detection condition	• If the TCM detects any of the following conditions for a continuous 5 s: ― Electric AT oil pump circuit has a malfunction. ― Electric AT oil pump relay circuit has a malfunction.
Fail-safe	• Inhibits i-stop control.
Possible cause	• Electric AT oil pump relay malfunction • Short to ground or open circuit in electric AT oil pump relay power supply circuit • Electric AT oil pump connector or terminals malfunction • TCM connector or terminals malfunction • Short to ground in electric AT oil pump relay control circuit • Short to power supply in electric AT oil pump relay control circuit • Open circuit in electric AT oil pump relay control circuit • Short to ground in electric AT oil pump control circuit • Short to power supply in electric AT oil pump control circuit • Open circuit in electric AT oil pump control circuit • Short to ground in electric AT oil pump power supply circuit • Open circuit in electric AT oil pump power supply circuit • Open circuit in electric AT oil pump ground circuit • Electric AT oil pump malfunction

Diagnostic Procedure

Step	Inspection	Results	Action
1	INSPECT ELECTRIC AT OIL PUMP RELAY FOR MALFUNCTION • Inspect the applicable part. (See RELAY INSPECTION.) • Is the part normal?	Yes	Go to the next step.
1		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See RELAY LOCATION [(E)].) )
2	INSPECT ELECTRIC AT OIL PUMP RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT • Inspect the power supply circuit for an open circuit and short to ground. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT ELECTRIC AT OIL PUMP 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 connector and/or terminals, then go to repair completion verification.
4	INSPECT TCM CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
4		No	Repair or replace the connector and/or terminals, then go to repair completion verification.
5	INSPECT ELECTRIC AT OIL PUMP RELAY CONTROL 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.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT ELECTRIC AT OIL PUMP RELAY CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY • Inspect the applicable circuit for a short to power supply. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT ELECTRIC AT OIL PUMP RELAY CONTROL CIRCUIT FOR OPEN CIRCUIT • Inspect the applicable circuit for 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.
8	INSPECT ELECTRIC AT OIL PUMP CONTROL 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.
8		No	Repair or replace the malfunctioning location and perform the repair completion verification.
9	INSPECT ELECTRIC AT OIL PUMP CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY • Inspect the applicable circuit for a short to power supply. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
9		No	Repair or replace the malfunctioning location and perform the repair completion verification.
10	INSPECT ELECTRIC AT OIL PUMP CONTROL CIRCUIT FOR OPEN CIRCUIT • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
10		No	Repair or replace the malfunctioning location and perform the repair completion verification.
11	INSPECT ELECTRIC AT OIL PUMP POWER SUPPLY 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.
11		No	Repair or replace the malfunctioning location and perform the repair completion verification.
12	INSPECT ELECTRIC AT OIL PUMP POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
12		No	Repair or replace the malfunctioning location and perform the repair completion verification.
13	INSPECT ELECTRIC AT OIL PUMP GROUND CIRCUIT FOR OPEN CIRCUIT • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
13		No	Repair or replace the malfunctioning location and perform the repair completion verification.
14	INSPECT ELECTRIC AT OIL PUMP • Remove the electric AT oil pump. (See ELECTRIC AT OIL PUMP REMOVAL/INSTALLATION [ET6A-EL, ET6AX-EL].) • Verify that the resistance at the electric AT oil pump is as follows: ― Between terminals D and A: approx. 18.2 kohm ― Between terminals C and A: approx. 21.5 kohm • Is the resistance normal?	Yes	Install the electric AT oil pump and perform the repair completion verification. (See ELECTRIC AT OIL PUMP REMOVAL/INSTALLATION [ET6A-EL, ET6AX-EL].)
14		No	Replace the electric AT oil pump and perform the repair completion verification. (See ELECTRIC AT OIL PUMP REMOVAL/INSTALLATION [ET6A-EL, ET6AX-EL].)
Repair completion verification	VERIFY DTC TROUBLESHOOTING COMPLETED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Replace the fuse if it is blown. • Reconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Clear the DTC using the M-MDS. (See CLEARING DTC.) • Perform the following procedure to ensure that the DTC has been resolved: 1. Operate i-stop for 10 s or more. • Perform the DTC inspection using the M-MDS. (See DTC INSPECTION.) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (ET6A-EL, ET6AX-EL) (E)].)
Repair completion verification		No	DTC troubleshooting completed.