Symptom:
P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (AUTO
TRANS)
When Monitored and Set Condition:
P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (AUTO TRANS)
When Monitored: Engine running. Transmission not in park or neutral. Brakes not
applied. Engine run time greater than 10 seconds.
Set Condition: The PCM does not see vehicle speed signal from the transmission control
side of the PCM. Two Trip Fault.
POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
TRANSMISSION DTC(S)
PCM
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the Pinion Factor has been programmed and the correct
tire size has been programmed in before continuing.
Ignition on, engine not running.
With the DRBIIIt, read PCM DTCs and record the related Freeze Frame data.
Is the Good Trip displayed and equal to zero?
All
Yes → Go To 2
No → Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
2 Turn the ignition on.
With the DRBIIIt, check the Transmission DTCs.
Are there any Transmission DTCs present?
All
Yes → Refer to the appropriate Transmission DTC in the Transmission
category.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → NOTE: Before continuing, check the PCM harness connector
terminals for corrosion, damage, or terminal push out. Repair as
necessary. Replace and program the Powertrain Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
187
DRIVEABILITY - NGC
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