Jeep Grand Cherokee WK. Manual — part 1435
P0762-3-4 SOLENOID (CONTINUED)
2.
CHECK THE (T73) 3-4 SOLENOID CONTROL CIRCUIT FOR AN OPEN
Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Disconnect the Transmission Electrohydraulic Control Unit Assembly
harness connector.
Measure the resistance of the (T73) 3-4 Solenoid Control circuit
between the TCM C2 harness connector and the Transmission Elec-
trohydraulic Control Unit Assembly harness connector.
Is the resistance below 5.0 ohms?
Yes
>> Go To 3
No
>> Repair the (T73) 3-4 Solenoid Control circuit for an open.
Perform NAG1 TRANSMISSION VERIFICATION TEST -
VER 1.
3.
CHECK THE (T73) 3-4 SOLENOID CONTROL CIRCUIT FOR A
SHORT TO GROUND
Measure the resistance between ground and the (T73) 3-4 Solenoid
Control circuit.
Is the resistance below 5.0 ohms?
Yes
>> Repair the (T73) 3-4 Solenoid Control circuit for a short to
ground.
Perform NAG1 TRANSMISSION VERIFICATION TEST -
VER 1.
No
>> Go To 4
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AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS
WK
P0762-3-4 SOLENOID (CONTINUED)
4.
CHECK THE (T73) 3-4 SOLENOID CONTROL CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT
Measure the resistance between the (T73) 3-4 Solenoid Control circuit
and every other circuit in the Transmission Electrohydraulic Control
Unit Assembly harness connector.
Is the resistance below 5.0 ohms between the (T73) 3-4 Sole-
noid Control circuit and any other circuit(s) in the Transmission
Electrohydraulic Control Unit Assembly harness connector?
Yes
>> Repair the (T73) 3-4 Solenoid Control circuit for another
circuit.
Perform NAG1 TRANSMISSION VERIFICATION TEST -
VER 1.
No
>> Go To 5
5.
CHECK THE 3-4 SOLENOID
Reconnect the Transmission Electrohydraulic Control Unit Assembly
harness connector.
Measure the resistance of the 3-4 Solenoid between the (T73) 3-4
Solenoid Control circuit and the (T78) Solenoid Voltage Supply circuit
in the TCM C2 harness connector.
Is the resistance between 2.5 and 6.5 ohms?
Yes
>> Using the schematics as a guide, check the Transmission
Control Module (TCM) pins, terminals, and connectors for
corrosion, damage, or terminal push out. Pay particular
attention to all power and ground circuits. If no problems
are found, replace the TCM per the Service Information.
Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/TRANSMISSION CONTROL MODULE for the
appropriate service procedure.
Perform NAG1 TRANSMISSION VERIFICATION TEST -
VER 1.
No
>> Replace the 3-4 Solenoid per the Service Information. Refer to 21- AUTOMATIC TRANSMISSION-AU-
TOMATIC TRANSMISSION NAG1/SERVICE INFORMATION for the appropriate service procedure.
WK
AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS
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P0762-3-4 SOLENOID (CONTINUED)
6.
INTERMITTENT WIRING AND CONNECTORS
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 wiring and connectors while checking for any possible open or shorted circuits.
Check for any Service Information Tune-ups or Technical Service Bulletins that may apply.
Were there any problems found?
Yes
>> Repair as necessary.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Test Complete.
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AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS
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P0763-3-4 SOLENOID CIRCUIT
WK
AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS
21 - 553
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