TEST
ACTION
APPLICABILITY
14
Turn the ignition off to the lock position.
Disconnect the PCM harness connectors.
Check connectors - Clean/repair as necessary
Measure the resistance between the 3-4 Shift Solenoid Control circuit and ground.
Is the resistance below 5.0 ohms?
without 45RFE
AUTO TRANS
Yes
→
Repair or Replace the Transmission Solenoid Assembly for a short
to ground.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
Go To
15
15
Turn the ignition off to the lock position.
Disconnect the PCM harness connectors.
Check connectors - Clean/repair as necessary
NOTE: Resistance between the 3-4 Shift Solenoid Control circuit and the
Governor Pressure Solenoid Control circuit should be 28 to 68 ohms.
Measure the resistance between the 3-4 Shift Solenoid Control circuit and the
Governor Pressure Solenoid Control circuit in the PCM harness connector.
NOTE: Resistance between the 3-4 Shift Solenoid Control circuit and the
TCC Solenoid Control circuit should be 50 to 120 ohms.
Measure the resistance between the 3-4 Shift Solenoid Control circuit and the TCC
Solenoid Control circuit in the PCM harness connector.
Is the resistance of both measurements within the specified ranges?
without 45RFE
AUTO TRANS
Yes
→
Go To
16
No
→
Replace the Transmission Solenoid Assembly in accordance with
the Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
16
Turn the ignition off to the lock position.
Disconnect the PCM harness connectors.
Remove the Transmission Control Relay.
Check connectors - Clean/repair as necessary
NOTE: Resistance between the 3-4 Shift Solenoid circuit and the circuits
below should be above 100 kohms.
Measure the resistance between the Transmission 3-4 Shift Solenoid Control circuit
and the...
*Sensor Ground circuit in the C2 PCM harness connector.
*Transmission Temp Sensor Signal circuit in the PCM harness connector.
*Governor Pressure Sensor Signal circuit in the PCM harness connector.
*Transmission 5-volt Supply circuit in the C2 PCM harness connector.
Are the resistance values, to any of the listed circuits, below 100 kohms?
without 45RFE
AUTO TRANS
Yes
→
Replace the Transmission Solenoid Assembly in accordance with
the Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
Go To
17
17
If there are no possible causes remaining, view repair.
without 45RFE
AUTO TRANS
Repair
Replace the Powertrain Control Module in accordance with the
Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
349
TRANSMISSION
P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS —
Continued