Workshop Manual

DRIVE LINE CONTROL SYSTEM (TOD)
4B2–36
Diagnosis from Trouble Codes
B Diagnose the fault that have been saved to the control
unit according to the system self-diagnostic function.
Check flow
Trouble code Phenomenon Standard
1
23, 36, 37, 38
The ECU has failed. —
P1712, P1714
Step Action Yes No
1 Turn on the starter switch.
Is the trouble reproduced?
Replace the ECU
and conduct the
test run.
Go to
Step 3
Go to Step 2
2 1. Clear the trouble codes.
2. Conduct the test run.
Is the trouble reproduced during the test run?
Replace the ECU
and conduct the
test run.
Go to
Step 3
The trouble is not
reproduced.
Refer to
“Trouble
intermittently
observed”.
Go to Step 3
3 1. Check that all the parts are mounted.
2. Clear the trouble codes.
Is this step complete?
Verify the repair. Return to Step 3