DTC P0616 [MZ-CD 1.6 (Y6) (EURO4 emission level)]

id0102g6833000

DTC P0616

Main relay control circuit malfunction -short to ground
DETECTION CONDITION
•  The PCM monitors the main relay signal. If the main relay signal is short to ground for 2 s, the PCM determines that the main relay circuit has a malfunction.
POSSIBLE CAUSE
•  Main relay connector or terminal malfunction
•  Short to ground in the wiring harness between main relay terminal B and PCM terminal 241
•  Main relay malfunction
•  PCM connector or terminal malfunction
•  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
INSPECT MAIN RELAY CONNECTOR CONDITION
•  Switch the ignition to OFF.
•  Remove the main relay 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 7.
No
Go to the next step.
4
INSPECT MAIN RELAY
•  Inspect the main relay.
•  Is there any malfunction?
Yes
Replace the main relay, then go to Step 7.
No
Go to the next step.
5
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 the Step 7.
No
Go to the next step.
6
INSPECT MAIN RELAY CONTROL SIGNAL CIRCUIT FOR SHORT TO GROUND
•  Disconnect the battery negative terminal.
•  Main relay is removed.
•  PCM connector is disconnected.
•  Inspect for continuity between main relay terminal B (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 the next step.
No
Go to the next step.
7
VERIFY THAT DTC P0616 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.
8
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.