P0888

Symptom:
P0888-RELAY OUTPUT ALWAYS OFF

Test 1-4:

Test 5-7:

Test 8-10:

Test 11:

When Monitored:
Continuously

Set Condition:
This DTC is set when less than 3 volts are present at the Transmission Control Relay output circuits at the Transmission Control Module (TCM) when the TCM is energizing the relay. Note: Due to the integration of the Powertrain and Transmission Control Modules, the transmission part of the PCM has its own specific power and ground circuits.

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 STUCK OPEN
- TRANSMISSION CONTROL RELAY CONTROL CIRCUIT SHORT TO GROUND
- TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORT TO GROUND
- POWERTRAIN CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS