Inspection Procedure 26

CIRCUIT OPERATION
- The PCM controls generator output current by duty-controlling continuity between the generator G terminal (terminal 1) and ground.

TROUBLESHOOTING HINTS
The most likely causes for this code to be set are:
- Malfunction of the charging system.
- Short circuit in the harness generator G terminal and PCM.
- PCM failed.




WIRING DIAGRAM




CONNECTORS

DIAGNOSIS




STEP 1. Measure the voltage at the PCM connector C-39.
1. Measure the voltage between the terminal 8 and the ground under following condition. (Connectors should not be disconnected.)
a. Engine: Warm, idle
b. Radiator fan: Stopped
c. Headlight switch: "OFF" -> "ON"
d. Rear defogger switch: "OFF" -> "ON"
e. Stop light switch: "OFF" -> "ON"
- Voltage rises by 0.2 - 3.5 volts
If not within specifications, go to Step 2.
If within specifications, replace the generator. Then check that the malfunction is eliminated.







STEP 2. Check the harness wire between the generator connector B46 and the PCM connector C-39.

NOTE: Check the wire after checking the Intermediate connector B-11. If the intermediate connector B-11 is damaged, repair or replace it. Refer to Harness Connector Inspection >. Then check that the malfunction is eliminated.

If the wire between generator connector B-46 and PCM connector C-39 is not damaged, go to Step 3.
If the wire between generator connector B-46 and PCM connector C-39 is damaged, repair it. Then check the malfunction is eliminated.







STEP 3. Check for damage of the harness connector C-39 at the PCM and harness connector B-46 at the generator.
If harness connector B-46 and C-39 are not damaged, replace the PCM.
If harness connector B-46 and C-39 are damaged, repair or replace them. Refer to Harness Connector Inspection >.
Then check the malfunction is eliminated.