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Home >> Mazda >> 2003 >> MPV ES >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls [System & Component Testing] >> Engine Sensors & Switches >> Accelerator Pedal Position Sensor >> MAZDA6 (3.0L)
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MAZDA6 (3.0L)

  1. Connect scan tool to DLC-2.
  2. Turn ignition switch to ON position.
  3. Select APP1 or APP2 PID (percentage) on scan tool.
  4. Ensure APP1 or APP2 PID (percentage) changes smoothly while accelerator pedal is gradually depressed. If PID value changes as specified, go to next step. If PID value is not as specified, go to step  6.
  5. Ensure APP1 or APP2 PID (percentage) is as specified in table according to condition of accelerator pedal. See ACCELERATOR PEDAL POSITION SENSOR VOLTAGE SPECIFICATIONS  table. If PID values are as specified, check for open or short circuit. Go to next step. If PID values are not as specified in table, replace APP sensor.
    ACCELERATOR PEDAL POSITION SENSOR VOLTAGE SPECIFICATIONS

    Accelerator Pedal Condition APP1 PID Percentage APP1 PID Voltage APP2 PID Percentage APP2 Voltage
    Released 31.0-32.4 1.55-1.62 20.2-21.4 1.01-1.07
    Depressed 69.8-81.8 3.49-4.09 58.8-70.8 2.94-3.54

  6. Open Circuit Inspection

    Disconnect PCM 104-pin harness connector. See Fig 1. Back probe APP sensor 6-pin harness connector. See Figure. Check for continuity between following terminals:
    • APP sensor 6-pin harness connector terminal "A" (Red/Black wire) and PCM 104-pin harness connector terminal No. 45 (Light Green/Red wire) through common connector.
    • APP sensor 6-pin harness connector terminal "B" (Brown wire) and PCM 104-pin harness connector terminal No. 11 (Gray/Black wire) through common connector.
    • APP sensor 6-pin harness connector terminal "C" and PCM 104-pin harness connector terminal No. 10 (Blue/Yellow wire) through common connector.
    • APP sensor 6-pin harness connector terminal "D" and PCM 104-pin harness connector terminal No. 43 (Gray wire) through common connector.
    • APP sensor 6-pin harness connector terminal "E" and PCM 104-pin harness connector terminal No. 40.
    • APP sensor 6-pin harness connector terminal "F" and PCM 104-pin harness connector terminal No. 9 (White wire) through common connector.

    If continuity is present, go to next step. If continuity is not present, repair open circuit in suspect wire or replace wire harness. See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.

  7. Check for continuity between following:

    Short Circuit Inspection

    • APP sensor 6-pin harness connector terminal "A" (Red/Black wire) and power supply.
    • APP sensor 6-pin harness connector terminal "A" (Red/Black wire) and body ground.
    • APP sensor 6-pin harness connector terminal "B" (Brown wire) and power supply.
    • APP sensor 6-pin harness connector terminal "B" (Brown wire) and body ground.
    • APP sensor 6-pin harness connector terminal "C" (Blue/Yellow wire) and power supply.
    • APP sensor 6-pin harness connector terminal "C" (Blue/Yellow wire) and body ground.
    • APP sensor 6-pin harness connector terminal "D" (Gray wire) and power supply.
    • APP sensor 6-pin harness connector terminal "D" (Gray wire) and body ground.
    • APP sensor 6-pin harness connector terminal "E" (Red/Green wire) and power supply.
    • APP sensor 6-pin harness connector terminal "E" (Red/Green wire) and body ground.
    • APP sensor 6-pin harness connector terminal "F" (White wire) and power supply.
    • APP sensor 6-pin harness connector terminal "F" (White wire) and body ground.

    If continuity is present, repair short circuit in suspect wire or replace wire harness.

Fig 1: Identifying PCM 104-Pin Harness Connector & Terminals - Mazda6 (3.0L)
G00193600Courtesy of MAZDA MOTORS CORP.
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