P0988

Test 1:

Test 2-6:

Test 7-10:

Test 11:

SYMPTOM
P0988 4C PRESSURE SWITCH SENSE CIRCUIT

WHEN MONITORED
Whenever the engine is running.

SET CONDITION
This DTC is set if the 4C pressure switch is in the wrong state for the current gear. For example, this code would be set if the 4C pressure switch came on while the transmission was in second gear.

POSSIBLE CAUSES
- RELATED RELAY DTC'S PRESENT
- 4C PRESSURE SWITCH SENSE CIRCUIT OPEN
- TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN
- 4C PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
- 4C PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
- 4C PRESSURE SWITCH
- TRANSMISSION CONTROL MODULE
- INTERMITTENT WIRING AND CONNECTORS