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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (Engine Controls [Self-Diagnostics 2.3L]) >> Diagnostic Tests >> DTC P0335: Crankshaft Position Sensor 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. Verify CKP Sensor Voltage -  Disconnect CKP sensor 2-pin harness connector. Connect voltmeter between CKP sensor connector terminals "A" and "B". See Fig 1. Inspect voltage in AC range while cranking engine. If any voltage reading is present, go to next step. If voltage reading is not present, go to step  9.
    Fig 1: Identifying CKP Sensor Circuits & Harness Connector Terminals
    G00221505Courtesy of MAZDA MOTORS CORP.
  4. Inspect CKP Sensor Connector For Poor Connection -  Verify CKP sensor harness connector is connected securely. If connector is okay, go to next step. If connector is not okay, reconnect connector securely. After repair, go to step  10.
  5. Inspect CKP Circuit For Short To Power -  Turn ignition off. Disconnect CKP sensor connector. See Fig 1. Turn ignition on, engine off. Measure voltage between ground and following:
    • CKP sensor harness connector terminal "A" (Blue wire)
    • CKP sensor harness connector terminal "B" (Green wire)
    If voltage reading is not present, go to next step. If any voltage reading is present, repair short circuit to power in suspected wire or replace wire harness. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After repair, go to step  10.
  6. Inspect CMP Circuit For Short To Ground -  Check for continuity between following terminals and body ground:
    • CKP sensor harness connector terminal "A" (Blue wire)
    • CKP sensor harness connector terminal "B" (Green wire)
    If continuity is not present, go to next step. If any continuity is present, repair short to ground in suspected wire or replace wire harness. After repair, go to step  10.
  7. Inspect PCM Connector For Poor Connection -  Disconnect PCM harness connectors. Check for poor connection (such as damaged, pulled-out terminals, corrosion). If malfunction is not present, go to next step. If any malfunction is present, repair terminal. After repair, go to step  10.
  8. Inspect CKP Circuit For Open -  Check for continuity between following terminals:
    • CKP sensor harness connector terminal "A" and PCM 30-pin harness connector terminal "2D" (Blue wire)
    • CKP sensor harness connector terminal "B" and PCM 30-pin harness connector terminal "2G" (Green wire)
    If continuity is present, go to step  10. If continuity is not present, repair open circuit in suspected wire or replace wire harness. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After repair, go to step  10.
  9. Inspect CKP Sensor -  Turn ignition off. Perform CKP sensor inspection. Refer to CRANKSHAFT POSITION SENSOR under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING - MAZDA6, MIATA, MPV, PROTEGE & PROTEGE5 article. If CKP sensor is faulty, replace CKP sensor. After repair, go to next step. If CKP sensor is okay, check CKP sensor pulse wheel for damage. If CKP sensor pulse wheel is okay, go to next step. If CKP pulse wheel is damaged, replace CKP sensor pulse wheel. After repair, go to next step.
    10. NOTE: MAF PID should indicate 0.26 lb/min. (2.0 grams/sec.) or more during this test.
  10. Verify Trouble Shooting Of DTC P0335 Completed -  Make sure to reconnect all disconnected connectors. Turn ignition on, engine off. Clear DTC from PCM memory using WDS or equivalent. Start engine. Access MAF PID using WDS or equivalent. If same DTC is not present, go to next step. 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.
  11. 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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