DTC P1633 [MZI-3.7]
DTC P1633 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
available?
3
VERIFY STORED DTC IN DSC/RSC
HU/CM
z
Turn the ignition switch to the ON
position (Engine off).
z
Verify stored DTCs in DSC/RSC
HU/CM.
z
Are DTCs stored?
Yes
Go to the appropriate DTC inspection. (See
ON-BOARD DIAGNOSIS [DSC/RSC]
.)
No
Go to the next step.
4
VERIFY TROUBLESHOOTING OF
DTC P1501 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-
3.7]
.)
z
Is the PENDING CODE for the DTC
present?
Yes
Replace the PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION [MZI-
3.7]
.)
No
Go to the next step.
5
VERIFY AFTER REPAIR PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE". (See
AFTER
REPAIR PROCEDURE [MZI-3.7]
.)
z
Are any DTCs present?
Yes Go to the applicable DTC inspection. (See
DTC
TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P1633
Keep alive power voltage too low
DETECTION CONDITION
z
Indicates the keep alive power circuit has experienced a voltage
interrupt.
POSSIBLE CAUSE
z
Connector or terminal malfunction
z
Open circuit between battery positive terminal and PCM terminal 1
BB
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:41 AM
Page 346
© 2005 Mitchell Repair Information Company, LLC.
