DTC P1501 [MZI-3.7]
DTC P1501 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P1501 (MZI-3.7) DIAGNOSTIC PROCEDURE
4
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?
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 P1501
Vehicle speed sensor (VSS) out of self-test range
DETECTION
CONDITION
z
Indicates that the vehicle speed input signal is out of the self-test range. If the
PCM detects a vehicle speed input signal any time during the self-test, DTC
P1501 is set and the test aborts.
POSSIBLE
CAUSE
z
Noise on the vehicle speed input signal from radio frequency
interference/electro magnetic interference
z
External sources, such as ignition wires, the charging circuit, or aftermarket
equipment
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No
Record FREEZE FRAME DATA on the repair
order, then go to the next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins and/or
on-line repair information availability.
z
Is any related Service Bulletins
Yes
Perform repair or diagnosis according to the
available Service Bulletins.
z
If the vehicle is not repaired, go to the
next step.
No
Go to the next step.
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 345
© 2005 Mitchell Repair Information Company, LLC.
