Page 4049 of 5267
4.(T101) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (T101) Shift Motor
Control A circuit.
Is the resistance below 5.0 ohms?
Ye s>>
Repair the (T101) Shift Motor Control A circuit for a short to
ground.
Perform the TRANSFER CASE VERIFICATION TEST-VER
1. (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER
CASE - STANDARD PROCEDURE)
No>>
Go to 5
5.(T102) SHIFT MOTOR CONTROL B CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (T102) Shift Motor
Control B circuit.
Is the resistance below 5.0 ohms?
Ye s>>
Repair the (T102) Shift Motor Control B circuit for a short to
ground.
Perform the TRANSFER CASE VERIFICATION TEST-VER
1. (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER
CASE - STANDARD PROCEDURE)
No>>
Go to 6
Page 4050 of 5267

6.(T101) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO (T102) SHIFT MOTOR CONTROLB CIRCUIT
Measure the resistance between (T101) Shift Motor Control A circuit
and the (T102) Shift Motor Control B circuit at the at the TIPM C4 har-
ness connector.
Is the resistance below 5.0 ohms?
Ye s>>
Repair the (T101) Shift Motor Control A circuit for a short to
(T102) Shift Motor Control B circuit.
Perform the TRANSFER CASE VERIFICATION TEST-VER
1. (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER
CASE - STANDARD PROCEDURE)
No>>
Go to 8
7.SHIFT MOTOR/MODE SENSOR ASSEMBLY
Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit.
Were any problems found?
Ye s>>
Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
No>>
Replace the Shift Motor/Mode Sensor assembly in accordance with the Service Information.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
8.TOTALLY INTEGRATED POWER MODULE (TIPM)
Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit.
Were any problems found?
Ye s>>
Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
No>>
Replace the Totally Integrated Power Module (TIPM) in accordance with theService Information.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
Page 4051 of 5267
9.INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?
Ye s>>
Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
No>>
Te s t c o m p l e t e .
Page 4052 of 5267
C140C - TRANSFER CASE MOTOR CONTROL CIRCUIT HIGH
For a complete wiring diagramRefer to Section 8W
Page 4053 of 5267

When Monitored:
Ignition on, battery voltage between 9.0 and 16.0 volts.
Set Condition:
The TIPM detects 16.0 to 18.0 volts on the Transfer Case Motor Control Circuit for 2 seconds.
Possible Causes
(T101) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO VOLTAGE
(T102) SHIFT MOTOR CONTROL BCIRCUIT SHORTED TO VOLTAGE
(T101) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO (T102) SHIFT MOTOR CONTROLB CIRCUIT
SHIFT MOTOR/MODE SENSOR ASSEMBLY
TOTALLY INTEGRATED POWER MODULE (TIPM)
Diagnostic Test
1.DTC IS ACTIVE
Ignition on, engine not running.
With the scan tool, read TIPM DTCs.
Is the status Active for this DTC?
Ye s>>
Go to 2
No>>
Go to 9
2.SHIFT MOTOR HARNESS CIRCUIT RESISTANCE
Turn the ignition off to the lock position.
Disconnect the TIPM C4 harness connector.
Measure the resistance between the (T101) Shift Motor Control A circuit
and the (T102) Shift Motor Control B circuit.
Is the resistance between 40 and 100 ohms?
Ye s>>
Go to 8
No>>
Go to 3
3.SHIFT MOTOR RESISTANCE
Disconnect the Shift Motor/Mode Sensor Assembly harness connector.
Measure the resistance between the (T101) Shift Motor Control A circuit and the (T102) Shift Motor Control B circuit
at the Shift Motor/Mode Sensor Assembly component side.
Is the resistance between 40 and 100 ohms?
Ye s>>
Go to 4
No>>
Go to 7
Page 4054 of 5267
4.(T101) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO VOLTAGE
Ignition on, engine not running.
Measure the voltage of the (T101) Shift Motor Control A circuit at the
TIPM C4 harness connector.
Is there any voltage present?
Ye s>>
Repair the (T101) Shift Motor Control A circuit for a short to
voltage.
Perform the TRANSFER CASE VERIFICATION TEST-VER
1. (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER
CASE - STANDARD PROCEDURE)
No>>
Go to 5
5.(T102) SHIFT MOTOR CONTROL B CIRCUIT SHORTED TO VOLTAGE
Measure the voltage of the (T102) Shift Motor Control B circuit at the
TIPM C4 harness connector.
Is there any voltage present?
Ye s>>
Repair the (T102) Shift Motor Control B circuit for a short to
voltage.
Perform the TRANSFER CASE VERIFICATION TEST-VER
1. (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER
CASE - STANDARD PROCEDURE)
No>>
Go to 6
Page 4055 of 5267

6.(T101) SHIFT MOTOR CONTROL A CIRCUIT SHORTED TO (T102) SHIFT MOTOR CONTROLB CIRCUIT
Measure the resistance between (T101) Shift Motor Control A circuit
and the (T102) Shift Motor Control B circuit at the TIPM C4 harness
connector.
Is the resistance below 5.0 ohms?
Ye s>>
Repair the (T101) Shift Motor Control A circuit for a short to
(T102) Shift Motor Control B circuit.
Perform the TRANSFER CASE VERIFICATION TEST-VER
1. (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER
CASE - STANDARD PROCEDURE)
No>>
Go to 8
7.SHIFT MOTOR/MODE SENSOR ASSEMBLY
Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit.
Were any problems found?
Ye s>>
Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
No>>
Replace the Shift Motor/Mode Sensor Assembly in accordance with the Service Information.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
8.TOTALLY INTEGRATED POWER MODULE (TIPM)
Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit.
Were any problems found?
Ye s>>
Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/TRANSFER CASE CONTROL MODULE - DIAGNOSIS AND TESTING)
No>>
Replace the Totally Integrated Power Module (TIPM) in accordance with theService Information.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
Page 4056 of 5267
9.INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?
Ye s>>
Repair as necessary.
Perform the TRANSFER CASE VERIFICATION TEST-VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/TRANSFER CASE - STANDARD PROCEDURE)
No>>
Te s t c o m p l e t e .