DTC P0020 [MZI-3.7]
DTC P0020 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
position.
z
Clear the DTC from the PCM memory
using the M-MDS.
z
Start the engine.
z
Is the same DTC present?
No
Go to the next step.
7
VERIFY AFTER REPAIR PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE".
(See
AFTER REPAIR PROCEDURE
[MZI-3.7]
.)
z
Are any DTCs present?
Yes
Go to the applicable DTC inspection. (See
DTC TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P0020
CMP actuator circuit open (LH)
DETECTION
CONDITION
z
The PCM monitors the OCV (LH) circuit to the PCM for high and low voltage. The
test fails if the voltage exceeds or falls below a calibrated limit for a calibrated
amount of time.
POSSIBLE CAUSE
z
OCV (LH) malfunction
z
Connector or terminal malfunction
z
Open circuit between OCV (LH) terminal A and main relay No.1 terminal D
z
Open circuit between OCV (LH) terminal B and PCM terminal 2BK
z
Short to ground circuit between OCV (LH) terminal B and PCM terminal 2BK
z
Short to power supply between OCV (LH) terminal B and PCM terminal 2BK
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:34 AM
Page 36
© 2005 Mitchell Repair Information Company, LLC.
