P189D

P189D BACK UP VOLTAGE

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, power switch OFF and wait for at least
10 seconds, then perform the next test.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Power switch ON and wait for 5 seconds or more.
2.Check DTC.
Is "P189D" detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK MEMORY BACK UP POWER SUPPLY CIRCUIT

1.Power switch OFF.
2.Disconnect the electric shift control module connector.
3.Check the voltage between electric shift control module vehicle side harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 2.
NO- GO TO 3.

2. CHECK GROUND CIRCUIT

Check the continuity between electric shift control module vehicle side harness connector terminals and ground.





Is the inspection result normal?
YES - 1.Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
2.If inspection result is OK, replace the electric shift control module. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace damaged parts.

3. DETECT MALFUNCTIONING ITEM

Check the following.
- Harness for short or open between electric shift control module vehicle side harness connector and 12V battery.
- 12V battery
- 10A fuse (# 12)
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace damaged parts.