LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0704 Or DTC P1709 >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 2003 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
  1. If QUICK TEST was not performed, go to QUICK TEST  under SELF-DIAGNOSTIC SYSTEM. If QUICK TEST was performed, go to next step.
    2. NOTE: During KOEO self-test, clutch pedal must be down for manual transaxle.
  2. Check CPP Switch Function -  Turn ignition on, engine off. Access CPP PID and observe PID cycling ON/OFF with clutch pedal up, then down. If CPP PID reading changes from ON to OFF, problem is intermittent. Disconnect PCM 104-pin harness connector. Inspect both ends of PCM 104-pin harness connector for pushed out terminals, corrosion or loose wires. Repair as necessary. If CPP PID reading does not change from ON to OFF, go to next step. If connector is okay, replace PCM.
  3. Check CPP Switch -  Turn ignition off. Locate CPP switch near clutch pedal. Inspect switch and bracket for damage, bent or broken conditions. Repair as necessary. Disconnect CPP 5-pin harness connector and inspect for damage, pushed out or broken pins or broken wires. Repair as necessary. Measure resistance across CPP switch terminals with clutch pedal down. If resistance reading is less than 5 ohms, go to next step. If resistance reading is not as specified, replace CPP switch. After repair, go to step  6.
  4. Check Resistance Of CPP Circuit -  Disconnect scan tool. Disconnect PCM 104-pin harness connector. Connect Breakout Box (49-UN01-130) to PCM harness connector only. See Figure. Measure resistance of CPP circuit between breakout box terminal No. 64 and CPP switch 5-pin harness connector terminal No. 4 (Light Blue/Yellow wire). See Fig 1. If resistance reading is less than 5 ohms, go to next step. If resistance reading is not as specified, replace CPP switch. After repair, go to step  6.
    Fig 1: Identifying Clutch Pedal Position Switch 5-Pin Harness Connector & Terminals
    G00193644Courtesy of MAZDA MOTORS CORP.
  5. Check CPP Circuit For Short -  Measure resistance between breakout box terminals No. 64 (CPP) and No. 91 (SIG RTN). Measure resistance between ground and breakout box terminal No. 64 (CPP). If each resistance reading is more than 10,000 ohms, replace PCM. After repair, go to next step. If each resistance reading is not as specified, repair short circuit in suspect wire between PCM 104-pin harness connector and CPP switch 5-pin harness connector. See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS. After repair, go to next step.
  6. Verify Trouble Shooting Of DTCs Completed -  Reconnect all disconnected connectors. Clear DTCs from PCM memory using scan tool. Perform QUICK TEST  under SELF-DIAGNOSTIC SYSTEM. If same DTC is present, replace faulty PCM. Repeat QUICK TEST  under SELF-DIAGNOSTIC SYSTEM. If same DTC is not present, go to applicable procedure for other DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no DTCs are present, trouble shooting is complete.
scientia non olet · About LEMON Manuals