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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3 With TC] >> DTC P0704 >> Diagnostic procedure
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Diagnostic procedure

DTC P0704 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 FREEZE FRAME DATA on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Service Bulletins and/or online repair information availability.
  • Is any related repair information available?
Yes Perform the 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 CLASSIFY HIGH INPUT OR LOW INPUT 
  • Connect the WDS or equivalent to the DLC-2.
  • Access the CPP PID.
  • Verify the CPP PID during clutch pedal operation.
  • Is the CPP PID always off?
Yes Go to Next step.
No Go to Step 10.
4 INSPECT CPP SWITCH CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the CPP switch connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the terminal, then go to Step 14.
No Go to the next step.
5 CLASSIFY CPP SWITCH OR CIRCUIT 
  • Connect the WDS or equivalent to the DLC-2.
  • Access the CPP PID.
  • Connect a jumper wire between CPP switch terminal A and B (harness-side).
  • Is the CPP PID on?
Yes Go to the next step.
No Go to Step 7.
6 INSPECT CPP SWITCH 
Yes Go to Step 14.
No Replace the CPP switch, then go to Step 14.
7 INSPECT CPP SWITCH GROUND CIRCUIT FOR OPEN CIRCUIT 
  • Inspect for continuity between CPP switch terminal B (harness-side) and ground.
  • Is there continuity?
Yes Go to the next step.
No Repair or replace the CPP switch power circuit for an open circuit, then Go to Step 14.
8 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the terminal, then go to Step 14.
No Go to the next step.
9 INSPECT CPP SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT 
  • Inspect for continuity between CPP switch terminal A (harness-side) and PCM terminal 1H (harness-side).
  • Is there continuity?
Yes Repair or replace the wiring harness for an open circuit, then go to Step 14.
No Go to Step 14.
10 INSPECT CPP SWITCH CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to off.
  • Disconnect the CPP switch connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the terminal, then go to Step 14.
No Go to the next step.
11 CLASSIFY CPP SWITCH OR CIRCUIT 
  • Connect the WDS or equivalent to the DLC-2.
  • Access the CPP PID.
  • Verify that the CPP PID changes from on to off when the CPP switch connector disconnected.
  • Does the CPP PID change from on to off?
Yes Go to the next step.
No Go to Step 13.
12 INSPECT CPP switch 
Yes Go to Step 14.
No Replace the CPP switch, then go to Step 14.
13 INSPECT CPP SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND 
  • Inspect for continuity between CPP switch terminal A and ground.
  • Is there continuity?
Yes Repair or replace the wiring harness for a 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 the engine.
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Operate the clutch pedal while driving the vehicle below 30 km/h {19 mph} and stopping 8 times alternately.
  • Is the PENDING CODE for this DTC present?
Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION ).
No Go to the next step.
15 VERIFY AFTER REPAIR PROCEDURE 
Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No Troubleshooting completed.