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TRANSMISSION - NGC
P0888-RELAY OUTPUT ALWAYS OFF —
TEST
5
Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Remove the Transmission Control Relay.
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 all the Transmission Control Relay Output circuits
between the Transmission Control Relay connector and the appropriate terminals of
special tool #8815.
Is the resistance above 5.0 ohms on either circuit?
Yes → Repair the Transmission Control Relay Output circuit for an
→ Go To 6
No
6
Turn the ignition off to the lock position.
Remove the Transmission Control Relay.
Disconnect the PCM 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 Transmission Control Relay Control circuit between
the Transmission Control Relay connector and the appropriate terminal of special
tool #8815.
Is the resistance above 5.0 ohms?
Yes → Repair the Transmission Control Relay Control circuit for an
→ Go To 7
No
7
Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Remove the Transmission Control Relay.
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 between ground and the Transmission Control Relay Output
circuit.
Is the resistance below 5.0 ohms?
Yes → Repair the Transmission Control Relay Output circuit for a short
→ Go To 8
No
ACTION
open.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
open.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
to ground.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
Continued
264
APPLICABILITY
All
All
All
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