TEST
ACTION
APPLICABILITY
14
Turn the ignition off.
Remove the Transmission Control Relay from the PDC.
Disconnect the PCM harness connectors.
Check connectors - Clean/repair as necessary
Measure the resistance between the 3-4 Shift Solenoid Control circuit in PCM C2
harness connector cavity 21 and PCM C2 harness connector cavities 1, 8, 11, 29 31
and C1 cavity 4.
NOTE: The resistance should be 28.0 - 68.0 ohms between PCM C2 harness
connector cavity 21 and PCM C2 harness connector cavity 8.
NOTE: The resistance should be 50.0 - 120.0 ohms between PCM C2 harness
connector cavity 21 and PCM C2 harness connector cavity 11.
NOTE: The resistance between PCM C2 harness connector cavity 21 and all
other cavities listed should be above 100 kohms.
Measure the resistance between the 3-4 Shift Solenoid Control circuit in PCM C2
harness connector cavity 21 and Transmission Control Relay Output circuit cavity in
the Transmission Control Relay connector.
NOTE: The resistance should be 25.0 - 60.0 ohms between the 3-4 Shift
Solenoid Control circuit in PCM C2 harness connector cavity 21 and the
Transmission Control Relay Output circuit.
Are the resistances between circuits what they are supposed to be?
without 45RFE
AUTO TRANS
Yes
→
Go To
15
No
→
Replace the Transmission Solenoid Assembly in accordance with
the Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
15
If there are no possible causes remaining, view repair.
without 45RFE
AUTO TRANS
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
16
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running and at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
without 45RFE
AUTO TRANS
Yes
→
Repair as necessary
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
Test Complete.
128
DRIVEABILITY - DIESEL
P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS —
Continued