DTC P0704 [L3]

BME010200700W02

DTC P0704

Clutch switch circuit malfunction

DETECTION CONDITION

• PCM monitors changes in input voltage from clutch switch. If PCM does not detect PCM terminal 1R voltage changes while running vehicle with vehicle speed below 30 km/h {19mph} 10 times alternately, PCM determines that clutch switch circuit has malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
• MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
• FREEZE FRAME DATA is available.
• DTC is stored in PCM memory.

POSSIBLE CAUSE

• Clutch switch malfunction
• Poor connection of clutch switch connector or PCM connector
• Short to ground between clutch switch terminal C and PCM connector terminal 1R
• Open harness between clutch switch terminal C and PCM connector terminal 1R
• Open harness between ground and clutch switch terminal E
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to next step.
No
Record FREEZE FRAME DATA on repair order, then go to next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Check for related Service information availability.
• Is any related Service information available?
Yes
Perform repair or diagnosis according to available Service information.
• If vehicle is not repaired, go to next step.
No
Go to next step.
3
CLASSIFY HIGH INPUT OR LOW INPUT
• Connect WDS or equivalent to DLC-2.
• Access CPP PID.
• Verify CPP PID during clutch pedal operation.
• Is CPP PID always OFF?.
Yes
Go to Next step.
No
Go to Step 10.
4
INSPECT CLUTCH SWITCH CONNECTOR FOR POOR CONNECTION
• Turn ignition switch to OFF.
• Disconnect clutch switch connector.
• Inspect for poor connection (damaged/pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to Step 14.
No
Go to next step.
5
CLASSIFY CLUTCH SWITCH OR CIRCUIT
• Connect WDS or equivalent to DLC-2.
• Access CPP PID.
• Connect a jumper wire between clutch switch terminal C and E.
• Is CPP PID on?
Yes
Go to next step.
No
Go to Step 7.
6
INSPECT CLUTCH SWITCH
• Perform clutch switch inspection.
• Is clutch switch okay?
Yes
Go to Step 14.
No
Replace clutch switch, then go to Step 14.
7
INSPECT CLUTCH SWITCH GROUND CIRCUIT FOR OPEN CIRCUIT
• Inspect continuity between clutch switch terminal E and ground.
• Is there continuity?
Yes
Go to next step.
No
Repair or replace clutch switch power circuit for open, then Go to Step 14.
8
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn ignition switch to OFF.
• Disconnect PCM connector.
• Inspect for poor connection (damaged/pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to Step 14.
No
Go to next step.
9
INSPECT CLUTCH SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Check continuity between clutch switch terminal C and PCM terminal 1R.
• Is there continuity?
Yes
Repair or replace harness for open, then go to Step 14.
No
Go to Step 14.
10
INSPECT CLUTCH SWITCH CONNECTOR FOR POOR CONNECTION
• Turn ignition switch to OFF.
• Disconnect clutch switch connector.
• Inspect for poor connection (damaged/pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to Step 14.
No
Go to next step.
11
CLASSIFY CLUTCH SWITCH OR CIRCUIT
• Connect WDS or equivalent to DLC-2.
• Access CPP PID.
• Verify that CPP PID changes from ON to OFF when clutch switch connector disconnected.
• Does CPP PID change from ON to OFF?
Yes
Go to next step.
No
Go to Step 13.
12
INSPECT CLUTCH SWITCH
• Perform clutch switch inspection.
• Is clutch switch okay?
Yes
Go to Step 14.
No
Replace clutch switch, then go to Step 14.
13
INSPECT CLUTCH SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND
• Inspect continuity between clutch switch terminal C and ground.
• Is there continuity?
Yes
Repair or replace harness for short to ground, then go to Step 14.
No
Go to Next step.
14
VERIFY TROUBLESHOOTING OF DTC P0704 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Start engine.
• Clear DTC from PCM memory using WDS or equivalent.
• Operate clutch pedal while driving vehicle below 30 km/h {19 mph} 10 times alternately.
• Is same DTC present?
Yes
Replace PCM, then go to next step.
No
Go to next step.
15
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
Yes
Go to applicable DTC troubleshooting.
No
Troubleshooting completed.