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Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0335 [L3] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
 Yes Go to the next step.
No Record FREEZE FRAME DATA on repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Service Bulletins and/or online repair information availability.
  • Is any related repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 VERIFY CKP SENSOR VOLTAGE 
  • Disconnect CKP sensor connector.
  • Connect voltmeter between CKP sensor connector terminals A and B (sensor-side).
  • Inspect the voltage in AC range while cranking the engine.
  • Is there any voltage?
 Yes Go to the next step.
No Go to step 10.
4 INSPECT CKP SENSOR CONNECTOR FOR POOR CONNECTION 
  • Verify that the CKP sensor connector is connected securely.
  • Is connector normal?
 Yes Go to the next step.
No Reconnect the connector, then go to Step 11.
5 INSPECT CKP CIRCUIT FOR SHORT TO POWER SUPPLY 
  • Turn ignition switch OFF
  • Disconnect CKP sensor connector.
  • Turn ignition switch ON (Engine off).
  • Measure voltage between following terminals (harness-side):
    • CKP sensor terminal A
    • CKP sensor terminal B
  • Is there any voltage?
 Yes Repair or replace suspected harness, then go to Step 11.
No Go to the next step.
6 INSPECT CKP CIRCUIT FOR SHORT TO GROUND 
  • Inspect continuity between following terminal and body ground:
    • CKP sensor connector terminal A (harness-side)
    • CKP sensor connector terminal B (harness-side)
  • Is there continuity?
 Yes Repair or replace suspected harness, then go to Step 11.
No Go to the next step.
7 INSPECT CKP CIRCUITS FOR SHORT CIRCUIT 
  • Inspect continuity between CKP sensor connector terminals A and B (harness-side).
  • Is there continuity?
 Yes Repair or replace suspected harness, then go to Step 11.
No Go to the next step.
8 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Disconnect PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair terminal, then go to Step 11.
No Go to the next step.
9 INSPECT CKP CIRCUIT FOR OPEN CIRCUIT 
  • Inspect continuity between following circuits:
    • CKP sensor terminal A (harness-side) and PCM terminal 27(1), 2D(2) (harness-side)
    • CKP sensor terminal B (harness-side) and PCM terminal 1(1), 2G(2) (harness-side)
  • Is there continuity?
 Yes Go to Step 11.
No Repair or replace suspected harness, then go to Step 11.
10 INSPECT CKP SENSOR 
 Yes Go to the next step.
No Inspect CKP sensor pulse wheel for damage. Replace CKP sensor pulse wheel and go to the next step.
11 VERIFY TROUBLESHOOTING OF DTC P0335 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Turn ignition switch to ON (Engine off).
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Start engine.
  • Access MAF PID using the WDS or equivalent.
    NOTE:
    • MAF PID should indicate 2.0 g/s {0.26 lb/min.} or above  during this test
  • Is same DTC present?
 Yes Replace PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION .)
No Go to the next step.
12 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection. (See DTC TABLE .)
No Troubleshooting completed.
(1) California emission regulation applicable ATX model
(2) Except for California emission regulation applicable ATX model
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