Mazda CX-9 Grand Touring 2009 Manual page 1210

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
available?
VERIFY STORED DTC IN DSC/RSC
HU/CM
Turn the ignition switch to the ON
3
position (Engine off).
Verify stored DTCs in DSC/RSC
HU/CM.
Are DTCs stored?
VERIFY TROUBLESHOOTING OF
DTC P1501 HAS BEEN COMPLETED
Verify that all disconnected connectors
reconnected.
Clear the DTC from the PCM memory
using the M-MDS.
4
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
5
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-3.7].)
Are any DTCs present?
DTC P1633 [MZI-3.7]
DTC P1633 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P1633
DETECTION CONDITION
POSSIBLE CAUSE
2008 Mazda CX-9 Grand Touring
Go to the appropriate DTC inspection. (See
Yes
ON-BOARD DIAGNOSIS [DSC/RSC] .)
No
Replace the PCM, then go to the next step. (See
Yes PCM REMOVAL/INSTALLATION [MZI-
3.7] .)
No
Go to the applicable DTC inspection. (See DTC
Yes
TABLE [MZI-3.7].)
No
Keep alive power voltage too low
Indicates the keep alive power circuit has experienced a voltage
interrupt.
Connector or terminal malfunction
Open circuit between battery positive terminal and PCM terminal 1
BB
Go to the next step.
Go to the next step.
Troubleshooting completed.