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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 60 (Engine Controls [Self-Diagnostics 2.3L]) >> Diagnostic Tests >> DTC P0704: Clutch Switch Circuit - Malfunction >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. If FREEZE FRAME DATA has been recorded, go to next step. If FREEZE FRAME DATA has not been recorded, record FREEZE FRAME DATA. Go to next step.
  2. Verify Related Repair Information Availability -  Check for related Service Bulletins and/or on-line repair information availability. If any related repair information is available, perform repair or diagnosis according to available repair information. If vehicle is not repaired, go to next step. If related repair information is not available, 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. If CPP PID is always OFF, go to next step. If CPP PID is not always OFF, go to step  7.
  4. Inspect Clutch Switch Connector For Poor Connection -  Turn ignition off. Disconnect clutch switch 5-pin harness connector. Check for poor connection (such as damaged, pulled-out terminals, corrosion). If malfunction is not present, go to next step. If malfunction is present, repair or replace faulty terminal. After repair, go to step  14.
  5. Classify Clutch Switch Or Circuit -  Connect WDS or equivalent to DLC-2. Access CPP PID. Connect a fused jumper wire between clutch switch 5-pin harness connector terminal "B" (White/Green wire) and terminal "D" (Black wire). See Fig 1. If CPP PID is ON, go to next step. If CPP PID is not ON, go to step  7.
    Fig 1: Identifying Clutch Switch Circuits & Harness Connector Terminals
    G00221517Courtesy of MAZDA MOTORS CORP.
  6. Inspect Clutch Switch -  Perform clutch switch inspection. Refer to CLUTCH SWITCH (M/T) under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - MAZDA6, MIATA, MPV, PROTEGE & PROTEGE5 article. If clutch switch is okay, go to next step. If clutch switch is faulty, replace clutch switch. After repair, go to step  14.
  7. Inspect Clutch Switch Ground Circuit For Open Circuit -  Inspect continuity between clutch switch 5-pin harness connector terminal "D" (Black wire) and ground. If continuity is present, go to next step. If continuity is not present, repair open circuit in Black wire between clutch switch 5-pin harness connector terminal "D" and body ground or replace wire harness. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After repair, go to step  14.
  8. Inspect PCM Connector For Poor Connection -  Turn ignition off. Disconnect PCM harness connectors. Inspect for poor connection (such as damaged, pulled-out terminals, corrosion). If malfunction is not present, go to next step. If malfunction is present, repair terminal or replace wire harness. After repair, go to step  14.
  9. Inspect Clutch Switch Signal Circuit For Open Circuit -  Check for continuity in White/Green wire between clutch switch 5-pin harness connector terminal "B" and PCM 30-pin harness connector terminal "1R". See Fig 1. If continuity is present, go to step  14. If continuity is not present, repair open circuit in White/Green wire between clutch switch 5-pin harness connector terminal "B" and PCM 30-pin harness connector terminal "1R" or replace wire harness. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After repair, go to step  14.
  10. Inspect Clutch Switch Connector For Poor Connection -  Turn ignition off. Disconnect clutch switch 5-pin harness connector. Inspect for poor connection (such as damaged, pulled-out terminals, corrosion). If malfunction is not present, go to next step. If malfunction is present, repair terminal or replace wire harness. After repair, go to step  14.
  11. Classify Clutch Switch Or Circuit -  Connect WDS or equivalent to DLC-2. Access CPP PID. Verify CPP PID changes from ON to OFF when clutch switch 5-pin harness connector is disconnected. If CPP PID changes from ON to OFF, go to next step. If CPP PID does not change from ON to OFF, go to step  13
  12. Inspect Clutch Switch -  Perform clutch switch inspection. Refer to CLUTCH SWITCH (M/T) under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - MAZDA6, MIATA, MPV, PROTEGE & PROTEGE5 article. If clutch switch is okay, go to next step. If clutch switch is faulty, replace clutch switch. After repair, go to step  14.
  13. Inspect Clutch Switch Signal Circuit For Short To Ground -  Inspect continuity between clutch switch 5-pin harness connector terminal "B" and ground. If continuity is not present, go to next step. If continuity is present, repair short circuit in White/Green wire between clutch switch 5-pin harness connector terminal "B" and PCM 30-pin harness connector terminal "1R" or replace wire harness. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  14. Verify Trouble Shooting Of DTC P0704 Is Completed -  Make sure to reconnect all disconnected connectors. Start engine. Clear DTC from PCM memory using WDS or equivalent. Operate clutch pedal 8 times repeatedly while driving vehicle less than 19 MPH. If PENDING CODE of same DTC is present, replace PCM. For PCM removal and installation, see POWERTRAIN CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in REMOVAL & INSTALLATION article. After repair, go to next step.
  15. Verify After Repair Procedure -  Using scan tool, perform After Repair Procedure. See AFTER REPAIR PROCEDURE . If any DTCs are present, go to appropriate DTC inspection. Refer to DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no DTCs are present, trouble shooting is complete.
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