Mazda CX-9 Grand Touring 2009 Manual page 942

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
PCM terminal 2AH (wiring harness-
side).
Is the continuity?
INSPECT TP SENSOR NO.1
Inspect the TP sensor No.1. (See
8
THROTTLE POSITION (TP)
SENSOR INSPECTION [MZI-3.7] .)
Is there any malfunction?
VERIFY TROUBLESHOOTING OF DTC
P0122 HAS BEEN COMPLETED
Make sure to reconnect all disconnected
connectors.
Clear the DTC from the PCM memory
9
using the M-MDS.
Start the engine.
Perform the "KOEO/KOER self-test".
(See KOEO/KOER SELF TEST [MZI-
3.7].)
Is same DTC present?
VERIFY AFTER REPAIR PROCEDURE
Perform the "AFTER REPAIR
10
PROCEDURE". (See AFTER REPAIR
PROCEDURE [MZI-3.7].)
Are any DTCs present?
DTC P0123 [MZI-3.7]
DTC P0123 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P0123
DETECTION
CONDITION
POSSIBLE CAUSE
2008 Mazda CX-9 Grand Touring
TP sensor No.1 circuit high input
The TP sensor No.1 circuit was flagged as a concern by the PCM indicating a
high voltage.
TP sensor No.1 malfunction
Connector or terminal malfunction
Short to constant voltage supply circuit between throttle body terminal F and
PCM terminal 2Z
TP sensor signal circuits are shorted each other
Step 9.
No
Replace the throttle body, then go to the next
Yes
step.
No Go to the next step.
Replace the PCM, then go to the next step.
Yes (See PCM REMOVAL/INSTALLATION
[MZI-3.7] .)
No Go to the next step.
Go to the applicable DTC inspection. (See
Yes
DTC TABLE [MZI-3.7].)
No Troubleshooting completed.