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 P2507 [BP, BP WITH TC] DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME PID DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME PID 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 CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT? Connect the WDS or equivalent to the DLC-2. Clear the DTC from the PCM memory using the WDS or equivalent. Turn the ignition switch to the ON position (Engine off). Is the same DTC present?	Yes	Go to the next step.
3		No	Intermittent concern exists. Perform the "INTERMITTENT CONCERNS TROUBLESHOOTING". (See INTERMITTENT CONCERN TROUBLESHOOTING .)
4	INSPECT EEC FUSE Turn the ignition switch off. Inspect fuse for failure and proper. Is it normal?	Yes	Go to step 7.
4		No	If fuse has been melt down, then go to the next step. If fuse is not installed correctly, install it correctly then go to Step 8.
5	INSPECT MONITOR CIRCUIT FOR SHORT TO GROUND Disconnect battery cables. Inspect continuity between fuse terminal and body ground. Is there continuity?	Yes	Repair or replace harness for short to ground and install new fuse, then go to Step 8.
5		No	Go to step 8.
6	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 terminals, then go to Step 8.
6		No	Go to the next step.
7	INSPECT MONITOR CIRCUIT FOR OPEN CIRCUIT Disconnect battery cables. Inspect continuity between fuse terminal and PCM terminal 4AG (harness-side). Is there continuity?	Yes	Go to the next step.
7		No	Repair or replace harness for an open circuit, then go to the next step.
8	VERIFY TROUBLESHOOTING OF DTC P2507 COMPLETED Make sure to reconnect all disconnected connectors. Turn the ignition switch to the ON position (Engine off). Clear the DTC from the PCM memory using the WDS or equivalent. Start engine and warm it up completely. Is the same DTC present?	Yes	Replace PCM, then go to the next step.
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE ". (See AFTER REPAIR PROCEDURE .) Is any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
9		No	Troubleshooting completed.