Mazda CX-9 Grand Touring 2009 Manual page 1242

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
terminal A and B.
Is the resistance more than 10 kilohms?
VERIFY TROUBLESHOOTING OF DTC
P2112 HAS BEEN COMPLETED
Verify that all disconnected connectors
reconnected.
Clear the DTC from the PCM memory using
the M-MDS.
9
Perform the "KOEO or KOER self-test" using
the M-MDS.
(See KOEO/KOER SELF TEST [MZI-
3.7].)
Is the PENDING CODE for the DTC present?
VERIFY AFTER REPAIR PROCEDURE
Perform the "AFTER REPAIR
10
PROCEDURE". (See AFTER REPAIR
PROCEDURE [MZI-3.7].)
Are any DTCs present?
DTC P2121, P2126, P2131 [MZI-3.7]
DTC P2121, P2126, P2131 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P2121
DTC P2126
DTC P2131
DETECTION
CONDITION
2008 Mazda CX-9 Grand Touring
APP sensor No.1 circuit range/performance
APP sensor No.2 circuit range/performance
APP sensor No.3 circuit range/performance
APP sensor fault flag is set for sensor No.1, No.2 and No.3 by the PCM,
indicating the signal is out of the normal self-test operating range.
APP sensor signal circuits are shorted each other
APP sensor malfunction
PCM malfunction
P2121
Open circuit wiring harness between APP sensor terminal E and PCM
terminal 1AK
Short to ground circuit between APP sensor terminal E and PCM terminal 1
AK
Short to power supply in wiring harness between APP sensor terminal E
and PCM terminal 1 AK
to the next step.
Replace the PCM, then go to the next
step. (See PCM
Yes
REMOVAL/INSTALLATION [MZI-
3.7] .)
No Go to the next step.
Go to the applicable DTC inspection.
Yes
(See DTC TABLE [MZI-3.7].)
No Troubleshooting completed.