TEST ACTION APPLICABILITY
2 Start the engine.
Place the shifter in park.
With the DRBIIIt, read the Input Speed Sensor RPM.
Is the Input Speed Sensor reading below 400 RPM?
All
Yes → Go To 3
No → Go To 11
3 Turn the ignition off to the lock position.
Remove the Starter Relay.
CAUTION: Removal of the Starter Relay is to prevent a Transmission, NO
RESPONSE, condition and disable the starter.
Install the Transmission Simulator, Miller tool #8333 and the Electronic Transmis-
sion Adapter kit 8333-1A.
Ignition on, engine not running.
With the Transmission Simulator, set the 9Input/Output Speed9 switch to 9ON9 and
the rotary switch to the 93000/12509 position.
With the DRBIIIt, read the Input and Output RPM.
Does the Input speed read 3000 RPM and the Output speed read 1250 RPM ± 50
RPM?
All
Yes → Go To 4
No → Go To 5
4 If there are no possible causes remaining, view repair. All
Repair
Replace the Input Speed Sensor per the Service Information.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
5 Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Input Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistanceof theInput SpeedSensor Signal circuit from the appropriate
terminal of special tool #8815 to the Input Speed Sensor connector.
Is the resistance above 5.0 ohms?
All
Yes → Repair the Input Speed Sensor Signal circuit for an open.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
No → Go To 6
63
TRANSMISSION - NGC
P0715-INPUT SPEED SENSOR ERROR — Continued