DTC P0691:00, P0691:13 [MZ-CD 1.6]

id0102g8444700

DTC P0691:00

DTC P0691:13

Cooling fan control circuit low
DETECTION CONDITION
•  The PCM monitors the cooling fan control signal circuit at PCM terminal 1AI. If the PCM detects that short to ground or open circuit in cooling fan control signal circuit, the PCM determines that there is a cooling fan control circuit problem.
POSSIBLE CAUSE
•  Fan control module connector or terminal malfunction
•  PCM connector or terminal malfunction
•  Short to ground in the wiring harness between fan control module terminal 1C and PCM terminal 1AI
•  Open circuit in the wiring harness between fan control module terminal 1C and PCM terminal 1AI
•  Fan control module 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 FAN CONTROL MODULE CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the fan control module 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 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 7.
No
Go to the next step.
5
INSPECT COOLING FAN CONTROL SIGNAL CIRCUIT FOR SHORT TO GROUND
•  Disconnect the battery negative terminal.
•  Fan control module and PCM connectors are disconnected.
•  Inspect for continuity between fan control module terminal 1C (wiring harness-side) and ground.
•  Is there any continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to the Step 7.
No
Go to the next step.
6
INSPECT COOLING FAN CONTROL SIGNAL CIRCUIT FOR OPEN CIRCUIT
•  Fan control module and PCM connectors are disconnected.
•  Inspect for continuity between fan control module terminal 1C (wiring harness-side) and PCM terminal 1AI.
•  Is there any continuity?
Yes
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
No
Replace the cooling fan component, then go to the next step.
(See COOLING FAN COMPONENT REMOVAL/INSTALLATION [MZ-CD 1.6].)
7
VERIFY THAT DTC P0691:00, P0691:13 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].)
No
DTC troubleshooting completed.