z
Turn the ignition switch to the ON
position (Engine off).
z
Inspect for continuity between
OCV (LH) terminal B (wiring
harness-side) and body ground.
z
Is there continuity?
No
Go to the next step.
8
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
z
Disconnect the 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 OCV (LH) CIRCUIT FOR
OPEN CIRCUIT
z
Turn the ignition switch off.
z
Measure the resistance between
the OCV (LH) connector terminal
B (wiring harness-side) and PCM
terminal 2BK (wiring harness-
side).
z
Is 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 P0020 HAS BEEN
COMPLETED
z
Verify that all disconnected
connectors reconnected.
z
Turn the ignition switch to the ON
position (Engine off).
z
Clear the DTC from the PCM
memory using the M-MDS.
z
Start the engine and run it at idle.
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this
DTC present?
Yes
Replace the PCM, then go to the next step.
(see
PCM
REMOVAL/INSTALLATION [MZI-
3.5]
.)
No
Go to the next step.
11
VERIFY AFTER REPAIR
PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE".
Yes
Go to the applicable DTC inspection.
(See
DTC TABLE [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 9:26:29 AM
Page 37
© 2005 Mitchell Repair Information Company, LLC.