DTC P0148 [MZI-3.5]
DTC P0148 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
z
Disconnect all the PCM
connectors.
z
Visually inspect for:
{
Pushed out pins
{
Corrosion
z
Connect all the PCM connectors
and verify that they seat correctly.
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this
DTC present?
No
The system is correctly. Go to the next
step.
12
VERIFY TROUBLESHOOTING OF
MISFIRE DTC HAS BEEN
COMPLETED
z
Verify that all disconnected
connectors are reconnected.
z
Turn the ignition switch to the ON
position (Engine off).
z
Clear the DTC from the PCM
memory using the M-MDS.
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this
DTC present?
Yes
Replace PCM, then go to the next step.
(see
PCM
REMOVAL/INSTALLATION [MZI-
3.5]
.)
No
Go to the next step.
13
VERIFY AFTER REPAIR
PROCEDURE
z
Perform "AFTER REPAIR
PROCEDURE".
(See
AFTER REPAIR
PROCEDURE [MZI-3.5]
.)
z
Are any DTC present?
Yes
Go to the applicable DTC inspection.
(See
DTC TABLE [MZI-3.5]
.)
No
Troubleshooting completed.
DTC P0148
Fuel delivery error
DETECTION
CONDITION
z
At least 1 bank is lean at wide open throttle (WOT).
POSSIBLE CAUSE
z
Severely restricted fuel filter
z
Severely restricted fuel supply line
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:30 AM
Page 104
© 2005 Mitchell Repair Information Company, LLC.