Mazda CX-9 Grand Touring 2009 Manual page 1102

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Fan control module No.1
terminal 1B (wiring harness-side)
and body ground.
Fan control module No.2
terminal B (wiring harness-side)
and body ground.
6
Single fan control module
Fan control module terminal 1B
(wiring harness-side) and body
ground.
Are there voltage B+?
INSPECT FAN CONTROL CIRCUIT
FOR SHORT TO GROUND
Turn the ignition switch off.
Inspect continuity between the
following circuits:
Dual fan control module
Fan control module No.1
terminal 1B (wiring harness-side)
7
and body ground.
Fan control module No.2
terminal B (wiring harness-side)
and body ground.
Single fan control module
Fan control module terminal 1B
(wiring harness-side) and body
ground.
Are there continuity?
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
Turn the ignition switch off.
8
Disconnect PCM connector.
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
Is there any malfunction?
INSPECT FAN CONTROL CIRCUIT
2008 Mazda CX-9 Grand Touring
No
Repair or replace suspected part, then go to
Yes
Step 10.
No
Repair or replace suspected part, then go to
Yes
Step 10.
No
Go to the next step.
Go to the next step.
Go to the next step.