TEST
ACTION
APPLICABILITY
18
Turn the ignition switch to the lock position.
Disconnect the TCM harness connector.
Disconnect the Transmission Solenoid/TRS harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between the 4C Pressure Switch Sense circuit and ground.
Is the resistance below 5.0 ohms?
45RFE AUTO
TRANS
Yes
→
Repair 4C Pressure Switch circuit short to ground.
Perform 45RFE TRANSMISSION VERIFICATION TEST - VER
1.
No
→
Go To
19
19
Turn the ignition switch to the lock position.
Disconnect the Transmission Control Module connector.
Disconnect the Transmission Solenoid/TRS harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B(+) circuit and the Trans Relay Output
circuit in the relay connector.
Turn ignition switch on.
Measure the voltage of the 4C Pressure Switch Sense circuit in the TCM connector.
Is the voltage above 1.0 volts?
45RFE AUTO
TRANS
Yes
→
Repair 4C Pressure Switch Sense circuit short to voltage.
Perform 45RFE TRANSMISSION VERIFICATION TEST - VER
1.
No
→
Go To
20
20
If there are no possible causes remaining, view repair.
45RFE AUTO
TRANS
Repair
Replace the TCM. WITH THE DRBIII
t PERFORM QUICK
LEARN.
Perform 45RFE TRANSMISSION VERIFICATION TEST - VER
1.
21
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this
circuit.
Wiggle the wires while checking for shorts and open circuits.
Were any problems found?
45RFE AUTO
TRANS
Yes
→
Repair as necessary.
Perform 45RFE TRANSMISSION VERIFICATION TEST - VER
1.
No
→
Test Complete.
119
TRANSMISSION
P1727-4C HYDRAULIC PRESSURE TEST FAILURE —
Continued