C1404- TRANSFER CASE RANGE POSITION SENSOR CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
Possible Causes
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(T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
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(T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO (K91) SENSOR GROUND CIRCUIT
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TRANSFER CASE (4WD) SWITCH
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TOTALLY INTEGRATED POWER MODULE (TIPM)
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Diagnostic Test
1.
T-CASE POSITION SENSOR VOLTAGE BELOW 0.2 VOLTS
Ignition on, engine not running.
With the scan tool under TIPM, read the T-Case Position Sensor voltage.
Is the voltage below 0.2 volts?
Yes
No
2.
(T313) MODE SENSOR SIGNAL CIRCUIT VOLTAGE BELOW 4.9 VOLTS
Turn the ignition off to the lock position.
Disconnect the Transfer Case (4WD) Switch harness connector.
Ignition on, engine not running.
Measure the voltage of the (T313) Mode Sensor Signal circuit and the (K91) Sensor Ground at the Transfer Case (4WD) Switch harness connector.
Is the voltage below 4.9 volts?
Yes
No
3.
(T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
Turn the ignition off to the lock position.
Disconnect the TIPM C1 harness connector.
Measure the resistance between ground and the (T313) Mode Sensor Signal circuit at the Transfer Case (4WD) Switch harness connector.
Is the resistance below 5.0 ohms?
Yes
No
4.
(T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO (K91) SENSOR GROUND CIRCUIT
Measure the resistance between the (T313) Mode Sensor Signal circuit and the (K91) Sensor Ground circuit at the Transfer Case (4WD) Switch harness connector.
Is the resistance below 5.0 ohms?
Yes
No
5.
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?
Yes
No