54Da-DTC P104A Generator shutdown circuit(2)

DTC P104A: Generator shutdown circuit(2)

caution

Before replacing the ECU, ensure that the communication circuit is normal.

MONITOR EXECUTION

Continuous

MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)

Sensor (The sensor below is determined to be normal)

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions

Judgment Criterion

When a state with the motor/generator control circuit OFF continues for 1 second when the start signal of the motor/generator control circuit is ON

OBD-II DRIVE CYCLE PATTERN

PROBABLE CAUSES

DIAGNOSIS

Required Special Tools

STEP 1. Check the signal line for short to power supply circuit (PHEV-ECU connector and GCU connector).

Check the wiring harness between PHEV-ECU connector (terminal GSDN) and the GCU connector (terminal GSDN).

Is the check result normal?

Go to Step 2

Repair the connector or wiring harness. Then go to Step 4

STEP 2. Test the OBD-II drive cycle.

(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 4

(2) Check the DTC.

Is the DTC set?

Replace the PHEV-ECU (Refer to

). Then go to Step 3

The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction

STEP 3. Test the OBD-II drive cycle.

(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 4

(2) Check the DTC.

Is DTC set?

Replace the power drive unit (Refer to GROUP 54Db - Power Drive Unit Removal and Installation

). Then go to Step 4

The inspection is complete.

STEP 4. Test the OBD-II drive cycle.

(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 4

(2) Check the DTC.

Is the DTC set?

Retry the troubleshooting.

The procedure is complete.