DTC P1289 [MZI-3.51
DTC P1289 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
DTC present?
7
VERIFY TROUBLESHOOTING OF
DTC P1288 HAS BEEN
COMPLETED
z
Verify that all disconnected
connectors reconnected.
z
Clear the DTC from the PCM
memory using the M-MDS.
z
Perform the KOEO or KOER self-
test using the M-MDS.
(See
KOEO/KOER SELF TEST
[MZI-3.5]
.)
z
Is the PENDING CODE for the
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.
8
VERIFY AFTER REPAIR
PROCEDURE
z
Perform "AFTER REPAIR
PROCEDURE".
(See
AFTER REPAIR
PROCEDURE [MZI-3.5]
.)
z
Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See
DTC TABLE [MZI-3.5]
.)
No
Troubleshooting completed.
DTC P1289
CHT sensor circuit high input
DETECTION
CONDITION
z
Indicates a CHT sensor circuit open.
POSSIBLE CAUSE
z
Open circuit in wiring harness between CHT sensor terminal A and PCM terminal
z
Open circuit in wiring harness between CHT sensor terminal B and PCM terminal
z
Short to power supply in wiring harness between CHT sensor terminal B and PCM
terminal 2AN
z
CHT sensor malfunction
z
Connector or terminal malfunction
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:36 AM
Page 352
© 2005 Mitchell Repair Information Company, LLC.