DIAGNOSTIC PROCEDURE
DTC P0685 (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No Record FREEZE FRAME DATA on the repair
order, then go to the next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins and/or
on-line repair information availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to the
available Service Bulletins.
z
If the vehicle is not repaired, go to the
next step.
No
Go to the next step.
3
INSPECT MAIN RELAY NO.1
CONTROL CIRCUIT FOR SHORT TO
GROUND
z
Turn the ignition switch off.
z
Inspect for continuity between main
relay No.1 terminal A (wiring harness-
side) and body ground.
z
Is there continuity?
Yes
Repair or replace suspected part, then go to Step
5.
No
Go to the next step.
4
INSPECT FOR CORRECT PCM
OPERATION
z
Disconnect all the PCM connectors.
z
Visually inspect for:
{
Pushed out pins
{
Corrosion
z
Connect all the PCM connectors and
verify that they seat correctly.
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this DTC
present?
Yes Go to the next step.
No
The system is correctly. Go to the next step.
VERIFY TROUBLESHOOTING OF
DTC P0685 HAS BEEN COMPLETED
z
Verify that all disconnected connectors
reconnected.
z
Clear the DTC from the PCM memory
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7]
.)
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:40 AM
Page 302
© 2005 Mitchell Repair Information Company, LLC.
