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 [AJ] 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.
1		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.
2		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). Check the voltage in AC range when cranking the engine. Is there a voltage reading?	Yes	Go to the next step.
3		No	Go to step 9.
4	VERIFY CKP SENSOR RESISTANCE Measure CKP sensor resistance. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION .) Is resistance normal?	Yes	Check CKP sensor pulse wheel for damage. If there is any malfunction, replace CKP sensor pulse wheel and go to Step 10. (See TIMING CHAIN REMOVAL/INSTALLATION .)
4		No	If resistance is 0 ohm, then go to the next step. If resistance is infinity, then go to Step 7.
5	INSPECT CKP SENSOR CIRCUIT FOR SHORT TO GND Turn the ignition switch off. Check continuity between the following circuits: CKP sensor terminal A (harness-side) and body GND CKP sensor terminal B (harness-side) and body GND Is there continuity?	Yes	Repair or replace harness for short to GND, then go to Step 11.
5		No	Go to the next step.
6	INSPECT CKP SENSOR CIRCUIT FOR SHORT WITH EACH OTHER Turn the ignition switch off. Disconnect CKP sensor connector. Check continuity between CKP sensor terminal A and B (harness-side). Is there continuity?	Yes	Repair or replace harness for short with each other, then go to Step 11.
6		No	Go to the next step.
7	INSPECT PCM CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect PCM connector. Check for poor connection (such as damaged, pulled-out pins, and corrosion). Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 11.
7		No	Go to the next step.
8	INSPECT CKP SENSOR CIRCUIT FOR OPEN CIRCUIT Turn the ignition switch off. Check continuity between the following circuits: CKP sensor terminal A (harness-side) and PCM terminal 1 (harness-side) CKP sensor terminal B (harness-side) and PCM terminal 27 (harness-side) Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace harness for open circuit, then go to Step 11.
9	INSPECT CKP SENSOR Inspect CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION .) Is there any malfunction?	Yes	Replace CKP sensor, then go to the next step. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION .)
9		No	Go to the next step.
10	INSPECT CKP SENSOR CIRCUIT FOR SHORT TO POWER Turn ignition switch to ON (Engine off). Disconnect CKP sensor connector. Measure voltage between the following terminal and body GND. CKP sensor terminal A (harness-side) CKP sensor terminal B (harness-side) Is voltage B+?	Yes	Repair or replace harness for short to power, then go to the next step.
10		No	Go to the next step.
11	VERIFY TROUBLESHOOTING OF DTC P0335 COMPLETED Make sure to reconnect all disconnected connectors. Turn the ignition switch to the ON position. 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 1.95 g/s {0.258 lb/min} or above during this test Is same DTC present?	Yes	Replace PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION .)
11		No	Go to the next step.
12	VERIFY AFTER REPAIR PROCEDURE Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
12		No	Troubleshooting completed.