DTC P2123 [MZI-3.7]
DTC P2123 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
6
z
Turn the ignition switch off.
z
Disconnect the PCM connector.
z
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
z
Is there any malfunction?
7.
No
Go to the next step.
7
VERIFY TROUBLESHOOTING OF
DTC P2122 HAS BEEN COMPLETED
z
Verify that all disconnected
connectors reconnected.
z
Clear the DTC from the PCM
memory using the M-MDS.
z
Start the engine.
z
Is the same DTC present?
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7]
.)
No
Go to the next step.
8
VERIFY AFTER REPAIR
PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE". (See
AFTER
REPAIR PROCEDURE [MZI-
3.7]
.)
z
Are any DTC present?
Yes
Go to the applicable DTC inspection. (See
DTC
TABLE [MZI-3.7]
.)
No
DTC troubleshooting completed.
DTC P2123
APP sensor No.1 circuit high input
DETECTION
CONDITION
z
APP sensor No.1 is out of self-test range high.
POSSIBLE CAUSE
z
Open circuit wiring harness between APP sensor terminal F and PCM
terminal 1BA
z
Open circuit wiring harness between APP sensor terminal D and PCM
terminal 1Y
z
Open circuit wiring harness between APP sensor terminal G and PCM
terminal 1AD
z
Open circuit wiring harness between APP sensor terminal C and PCM
terminal 1 AH
z
Open circuit wiring harness between APP sensor terminal E and PCM
terminal 1AK
z
Short to power supply in wiring harness between APP sensor terminal F and
PCM terminal 1 BA
z
Short to power supply in wiring harness between APP sensor terminal D and
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:42 AM
Page 388
© 2005 Mitchell Repair Information Company, LLC.
