Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0010 [BP] 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 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	CLASSIFY INTERMITTENT CONCERN OR CONTINUOUS CONCERN Clear DTC using the WDS or equivalent. Start engine and warm it up completely. Is same DTC detected?	Yes	Go to the next step.
3		No	Go to intermittent concern. (See INTERMITTENT CONCERN TROUBLESHOOTING )
4	INSPECT OCV (OIL CONTROL VALVE) CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect OCV (oil control valve) connector. Check for poor connection (damaged, pulled-out terminals, corrosion, etc.). Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 14.
4		No	Go to the next step.
5	INSPECT OCV (OIL CONTROL VALVE) ELECTRICAL MALFUNCTION Measure resistance between OCV (oil control valve) terminals A and B (part-side). Is resistance within 6.9-7.9 ohms?	Yes	Go to the next step.
5		No	Replace OCV (oil control valve), then go to Step 14.
6	CLASSIFY MALFUNCTION AT POWER SUPPLY CIRCUIT OR CONTROL CIRCUIT Turn ignition key to ON (Engine off). Measure voltage between OCV (oil control valve) terminal A (harness-side) and body GND. Is voltage B+ ?	Yes	Malfunction at control circuit. Go to Step 10.
6		No	Malfunction at power supply circuit. Go to the next step.
7	INSPECT PCM CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect PCM connector. Check for poor connection at terminal 4D (damaged, pulled-out terminals, corrosion, etc.). Is there any malfunction?	Yes	Repair terminal, then go to Step 14.
7		No	Go to the next step.
8	INSPECT POWER CIRCUIT FOR SHORT TO GND Turn the ignition switch off. Check for continuity between OCV (oil control valve) terminal A (harness-side) and body GND. Is there continuity?	Yes	Repair or replace harness for short to GND, then go to Step 14.
8		No	Go to the next step.
9	INSPECT POWER CIRCUIT FOR OPEN CIRCUIT Turn ignition key to OFF Check for continuity between OCV (oil control valve) terminal A (harness-side) and PCM terminal 4D (harness-side). Is there continuity?	Yes	Go to Step 14.
9		No	Repair or replace harness for open circuit, then go to Step 14.
10	INSPECT PCM CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect PCM connector. Check for poor connection at terminal 4R (damaged, pulled-out terminals, corrosion, etc.). Is there any malfunction?	Yes	Repair terminal, then go to Step 14.
10		No	Go to the next step.
11	INSPECT CONTROL CIRCUIT FOR SHORT TO POWER Turn ignition key to ON (Engine off). Measure voltage between OCV (oil control valve) terminal B (harness-side) and body GND. Is voltage B+ ?	Yes	Repair or replace harness for short to power, then go to Step 14.
11		No	Go to the next step.
12	INSPECT CONTROL CIRCUIT FOR SHORT TO GND Turn the ignition switch off. Check for continuity between OCV (oil control valve) terminal B (harness-side) and body GND. Is there continuity?	Yes	Repair or replace harness for short to GND, then go to Step 14.
12		No	Go to the next step.
13	INSPECT CONTROL CIRCUIT FOR OPEN CIRCUIT Check for continuity between OCV (oil control valve) terminal B (harness-side) and PCM terminal 4R (harness-side). Is there continuity?	Yes	Go to the next step.
13		No	Repair or replace harness for open circuit, then go to the next step.
14	VERIFY TROUBLESHOOTING OF DTC P0010 COMPLETED Make sure to connect all disconnected connectors. Clear the DTC from the PCM memory using the WDS or equivalent. Start engine and warm it up completely. Is same DTC present?	Yes	Replace PCM, then go to the next step.
14		No	Go to the next step.
15	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE ". (See AFTER REPAIR PROCEDURE [BP, BP WITH TC] ) Is any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE )
15		No	Troubleshooting completed.