TEST
ACTION
APPLICABILITY
2
With the DRBIII
t, read Transmission DTC’s
Are there any Transmission Control Relay DTC’s present also?
All
Yes
→ Refer to the Transmission category and perform the appropriate
symptom.
Perform 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
No
→ Go To 3
3
With the DRBIII
t, Check the STARTS SINCE SET counter for P0871.
NOTE: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter 2 or less?
All
Yes
→ Go To 4
No
→ Go To 11
4
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.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
With the Transmission Simulator turn the Pressure Switch selector to OD.
With the DRBIII
t, monitor the OD Pressure Switch state while pressing Pressure
Switch test button.
Did the OD Pressure Switch state change while pressing the Pressure Switch test
button?
All
Yes
→ Go To 5
No
→ Go To 6
5
If there are no possible causes remaining, view repair.
All
Repair
Replace the Solenoid/Pressure Switch Assembly per the Service
Information.
Perform 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
6
Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Transmission Solenoid/Pressure Switch Assembly 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 resistance of the OD Pressure Switch Sense circuit from the appropriate
terminal of special tool #8815 and the Transmission Solenoid/Pressure Switch
Assembly harness connector.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the OD Pressure Switch Sense circuit for an open.
Perform 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
No
→ Go To 7
249
TRANSMISSION - NGC
P0871-OD PRESSURE SWITCH SENSE CIRCUIT —
Continued