DTC P1632 [MZ-CD 1.6 (Y6) (EURO4 emission level)]

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DTC P1632

Generator state signal malfunction - invalid data
DETECTION CONDITION
•  The PCM monitors and compared the generator control signal and the generator state signal. If the generator state signal is detected invalid data input to PCM for 25 s, the PCM determines that the generator control circuit has a malfunction.
POSSIBLE CAUSE
•  Generator connector or terminal malfunction
•  Short to ground in wiring harness between generator terminal C and PCM terminal 213
•  Generator malfunction
•  PCM connector or terminal malfunction
•  Open circuit in wiring harness between generator terminal C and PCM terminal 213
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•   Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related service repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•   If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition to ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the following PENDING CODE/DTC also present?
―  P0620, P0A3B, P1244, P1245
Yes
Go to the applicable DTC inspection.
(See DTC P0620 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P0A3B [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P1244 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC P1245 [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
No
Go to the next step.
4
INSPECT GENERATOR CONNECTOR CONDITION
•  Switch the ignition to OFF.
•  Disconnect the generator connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
5
INSPECT GENERATOR SIGNAL CIRCUIT FOR SHORT TO GROUND
•  Disconnect the generator connector.
•  Inspect for continuity between generator terminal C (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 9.
No
Go to the next step.
6
INSPECT GENERATOR
•  Inspect the generator.
•  Is there any malfunction?
Yes
Replace the generator, then go to Step 9.
(See GENERATOR REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)
No
Go to the next step.
7
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
8
INSPECT GENERATOR CIRCUIT FOR OPEN CIRCUIT
•  Inspect for continuity between the generator terminal C (wiring harness-side) and PCM terminal 213 (wiring harness-side)
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
9
VERIFY THAT DTC P1632 TROUBLESHOOTING IS COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the after repair procedure.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
No
DTC troubleshooting completed.