Mazda CX-9 Grand Touring 2007 Manual page 668

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
DIAGNOSTIC PROCEDURE
DTC P0645 (MZI-3.5) DIAGNOSTIC PROCEDURE
STEP
1 VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
Has FREEZE FRAME DATA
been recorded?
2 VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
and/or on-line repair information
availability.
Is any related Service Bulletins
available?
3 INSPECT THAT THE ACCS PID IS
OFF
Turn ignition key to ON (Engine
running).
A/C switch and defroster switch
off.
Access the ACCS PID using M-
MDS.
Is the PID state off?
4 INSPECT A/C RELAY
CONNECTOR FOR POOR
CONNECTOR
Turn the ignition switch off.
Disconnect the A/C relay
connector.
Inspect for poor connection (such
as damaged, pulled-out pins,
corrosion, etc.).
Are there any malfunction?
5 INSPECT A/C RELAY POWER
SUPPLY CIRCUIT FOR OPEN
CIRCUIT
Turn the ignition switch to the ON
position (Engine off).
2007 Mazda CX-9 Grand Touring
INSPECTION ACTION
Yes Go to the next step.
No Record FREEZE FRAME DATA on the
repair order, then go to the next step.
Yes Perform repair or diagnosis according to
the available Service Bulletins.
If the vehicle is not repaired, go to
the next step.
No Go to the next step.
Yes Go to the next step.
No ACCS input to PCM is requesting A/C.
Inspect A/C system operation, then go to
Step 12.
(see DIAGNOSTIC TROUBLE CODE
NUMBER INSPECTION .)
(see TROUBLESHOOTING INDEX .)
Yes Repair or replace suspected part, then go to
Step 12.
No Go to the next step.
Yes Go to the next step.
No Repair or replace suspected part, then go to
Step 12.