8
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
z
Turn the ignition switch off.
z
Disconnect PCM connector.
z
Inspect for poor connection (such
as damaged/pulled-out pins,
corrosion).
z
Is there any malfunction?
Yes
Repair or replace suspected part, then go to
Step 10.
No
Go to the next step.
9
INSPECT FAN CONTROL
CIRCUIT FOR OPEN CIRCUIT
z
Inspect continuity between the
following circuits:
Dual fan control module
{
Fan control module No.1
terminal 1B (wiring
harness-side) and PCM
terminal 1AM (wiring
harness-side).
{
Fan control module No.2
terminal B (wiring harness-
side) and PCM terminal
1AM (wiring harness-side).
Single fan control module
{
Fan control module terminal
1B (wiring harness-side)
and PCM terminal 1AM
(wiring harness-side).
z
Are there continuity?
Yes
Go to the next step.
No
Repair or replace suspected part, then go to
the next step.
10
VERIFY TROUBLESHOOTING OF
DTC P0480 HAS BEEN
COMPLETED
z
Verify that all disconnected
connectors reconnected.
z
Clear the DTC from the PCM
memory using the M-MDS.
z
Perform the "KOEO or KOER
self-test".
Yes
Replace the PCM, then go to the next step.
(see
PCM
REMOVAL/INSTALLATION [MZI-
3.5]
.)
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:33 AM
Page 255
© 2005 Mitchell Repair Information Company, LLC.