P0888

Test 1:

Test 2-5:

Test 6-9:

Test 10-11:

SYMPTOM
P0888-RELAY OUTPUT ALWAYS OFF

WHEN MONITORED
Continuously

SET CONDITION
This code is set when less than 3 volts are present at the transmission control relay output (pins 16,17 and 36) circuits at the Transmission Control Module (TCM) when the TCM is energizing the relay.

POSSIBLE CAUSES
- FUSED B+ CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY CONTROL CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY GROUND CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY CONTROL CIRCUIT SHORTED TO GROUND
- TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORT TO GROUND
- TRANSMISSION CONTROL RELAY STUCK OPEN
- TRANSMISSION CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS