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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Engine Controls [Self-Diagnostics 3.0L]) >> Diagnostic Tests >> DTC P0222: Throttle Position Sensor No. 2 Circuit - Low Input >> 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. Inspect Throttle Body Connector For Poor Connection -  Turn ignition off. Disconnect throttle body 6-pin harness connector. Check for poor connection (such as damaged, pulled-out pins, and corrosion). If no malfunction is present, go to next step. If any malfunction is present, repair or replace terminal. After repair, go to step  9.
  4. Inspect TP Sensor No. 2 Power Circuit For Open Circuit -  Turn ignition on, engine off. Measure voltage between throttle body 6-pin harness connector terminal "D" (Yellow wire) and body ground. See Fig 1. If voltage reading is 4.5-5.5 volts, go to next step. If voltage reading is not 4.5-5.5 volts, repair open circuit between throttle body 6-pin harness connector terminal "D" (Yellow wire) and PCM 104-pin harness connector terminal No. 20 (Violet/Red wire) or replace wire harness. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After repair, go to step  9.
    Fig 1: Identifying TP Sensor No. 2 Circuits & Connector Terminals
    G00221544Courtesy of MAZDA MOTORS CORP.
  5. Verify TP Sensor No. 2 Signal Circuit For Short To Ground -  Turn ignition off. Check continuity between throttle body 6-pin harness connector terminal "C" (Gray wire) and body ground. If continuity is not present, repair short circuit to ground in wire between throttle body 6-pin harness connector terminal "C" (Gray wire) and PCM 104-pin harness connector terminal No. 63 (Brown/Yellow wire) or replace wire harness. After repair, go to step  9.
  6. Inspect TP Sensor No. 2 -  Inspect TP sensor No. 2. Refer to THROTTLE POSITION SENSOR under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - MAZDA6, MIATA, MPV, PROTEGE & PROTEGE5 article. If no malfunction is present, go to next step. If TP sensor No. 2 is faulty, replace throttle body. After repair, go to step  9.
  7. Inspect PCM Connector For Poor Connection -  Turn ignition off. Disconnect PCM 104-pin harness connector. Check for poor connection (such as damaged, pulled-out pins, and corrosion). If no malfunction is present, go to next step. If any malfunction is present, repair or replace terminal. After repair, go to step  9.
  8. Verify TP Sensor No. 2 Signal Circuit For Open Circuit -  Turn ignition off. Check for continuity between throttle body 6-pin harness connector terminal "C" (Gray wire) and PCM 104-pin harness connector terminal No. 63 (Brown/Yellow wire). See Fig 1. If continuity is present, go to next step. If continuity is not present, repair open circuit in suspected wire between throttle body 6-pin harness connector terminal "C" (Gray wire) and PCM 104-pin harness connector terminal No. 63 (Brown/Yellow wire) or replace wire harness. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After repair, go to next step.
  9. Verify Trouble Shooting Of DTC P0222 Is Completed -  Make sure to reconnect all disconnected connectors. Clear DTC from PCM memory using WDS or equivalent. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Turn ignition on, engine off. If 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.
  10. 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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