DTC P0625 [MZI-3.7 (PCM CONNECTOR (2 TYPES))]

id0102e3870900

DTC P0625

Generator field terminal circuit low
DETECTION CONDITION
•  The PCM monitors generator load from the generator/regulator in the form of frequency. The concern indicates the input is lower than the load should be in normal operation. The load input could be low when no generator output exists.
POSSIBLE CAUSE
•  Drive belt damaged
•  Poor installation generator terminal
•  Short to ground between generator terminal RC and PCM terminal 2S
•  Short to ground between generator terminal LI and PCM terminal 2AG
•  Poor installation battery positive terminal
•  Open circuit between terminal B and battery positive terminal
•  PCM connector or terminal malfunction
•  Generator malfunction
•  Low system voltage
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT DRIVE BELT DAMAGED
•  Verify inspect the drive belt for damage.
•  Is the drive belt normal?
Yes
Go to the next step.
No
Replace the drive belt, then go to Step 10.
(See DRIVE BELT REMOVAL/INSTALLATION [MZI-3.7].)
4
INSPECT GENERATOR TERMINAL FOR POOR INSTALLATION
•  Turn the engine switch off.
•  Inspect generator terminal B for looseness.
•  Are there any malfunction?
Yes
Connect generator terminal B correctly, then go to Step 10.
No
Go to the next step.
5
INSPECT GENERATOR CIRCUIT FOR SHORT TO GROUND
•  Inspect for continuity between the following terminal:
―  Generator terminal RC (wiring harness-side) and body ground.
―  Generator terminal LI (wiring harness-side) and body ground.
•  Are there continuity?
Yes
Repair or replace suspected part, then go to Step 10.
No
Go to the next step.
6
INSPECT BATTERY POSITIVE TERMINAL FOR POOR INSTALLATION
•  Turn the engine switch off.
•  Inspect the battery positive terminal for looseness.
•  Is there any malfunction?
Yes
Connect the battery positive terminal correctly, then go to Step 10.
No
Go to the next step.
7
INSPECT GENERATOR CIRCUIT FOR OPEN CIRCUIT
•  Inspect the continuity between generator terminal B (wiring harness-side) and battery positive terminal (wiring harness-side)
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace suspected part, then go to Step 10.
8
INSPECT PCM CONNECTOR FOR POOR CONNECTION
•  Turn the engine switch off.
•  Inspect for poor connection (such as damaged/pulled-out terminals, corrosion).
•  Are there any malfunction?
Yes
Repair or replace suspected part, then go to Step 10.
No
Go to the next step.
9
INSPECT GENERATOR
•  Inspect the generator.
•  Is there any malfunction?
Yes
Replace the generator, then go to Step 10.
(See GENERATOR REMOVAL/INSTALLATION [MZI-3.7].)
No
Go to the next step.
10
VERIFY TROUBLESHOOTING OF DTC P0625 HAS BEEN COMPLETED
•  Verify that all disconnected connectors reconnected.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the “KOEO or KOER self-test” using the M-MDS.
•  Is the PENDING CODE for the DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZI-3.7].)
No
Go to the next step.
11
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZI-3.7 (PCM CONNECTOR (2 TYPES))].)
No
Troubleshooting completed.