Mazda CX-9 Grand Touring 2009 Manual page 1166

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
DIAGNOSTIC PROCEDURE
DTC P0685 (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
1
Has FREEZE FRAME DATA been
recorded?
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins and/or
2
on-line repair information availability.
Is any related Service Bulletins
available?
INSPECT MAIN RELAY NO.1
CONTROL CIRCUIT FOR SHORT TO
GROUND
Turn the ignition switch off.
3
Inspect for continuity between main
relay No.1 terminal A (wiring harness-
side) and body ground.
Is there continuity?
INSPECT FOR CORRECT PCM
OPERATION
Disconnect all the PCM connectors.
Visually inspect for:
Pushed out pins
4
Corrosion
Connect all the PCM connectors and
verify that they seat correctly.
Retrieve DTCs using the M-MDS.
Is the PENDING CODE for this DTC
present?
VERIFY TROUBLESHOOTING OF
DTC P0685 HAS BEEN COMPLETED
Verify that all disconnected connectors
reconnected.
Clear the DTC from the PCM memory
2008 Mazda CX-9 Grand Touring
INSPECTION ACTION
Yes Go to the next step.
Record FREEZE FRAME DATA on the repair
No
order, then go to the next step.
Perform repair or diagnosis according to the
available Service Bulletins.
Yes
If the vehicle is not repaired, go to the
next step.
No Go to the next step.
Repair or replace suspected part, then go to Step
Yes
5.
No Go to the next step.
Yes Go to the next step.
No The system is correctly. Go to the next step.
Replace the PCM, then go to the next step. (See
Yes PCM REMOVAL/INSTALLATION [MZI-
3.7] .)