C1405- TRANSFER CASE RANGE POSITION SENSOR CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
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When Monitored:
With the ignition on. Battery voltage between 9.0 and 16.0 volts
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Set Condition:
The TIPM detects 5.0 volts on the Transfer Case Range Position Sensor Signal circuit for 2.0 seconds when voltage should not be present.
Possible Causes
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(T313) MODE SENSOR SIGNAL CIRCUIT OPEN
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(K91) SENSOR GROUND CIRCUIT OPEN
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(T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
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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 ABOVE 4.8 VOLTS
Ignition on, engine not running.
With the scan tool under TIPM, read the T-Case Position sensor voltage.
Is the voltage above 4.8 volts?
Yes
No
2.
(T313) MODE SENSOR SIGNAL CIRCUIT VOLTAGE
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 between 4.8 and 5.2 volts?
Yes
No
3.
(T313) MODE SENSOR SIGNAL CIRCUIT OPEN
Turn the ignition off to the lock position.
Disconnect the TIPM C1 harness connector.
Measure the resistance of the (T313) Mode Sensor Signal circuit between the Transfer Case (4WD) Switch harness connector and the TIPM C1 harness connector.
Is the resistance above 5.0 ohms?
Yes
No
4.
(K91) SENSOR GROUND CIRCUIT OPEN
Measure the resistance of the (K91) Sensor Ground circuit between the Transfer Case (4WD) Switch harness connector and the TIPM C1 harness connector.
Is the resistance above 5.0 ohms?
Yes
No
5.
(T313) MODE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
Ignition on, engine not running.
Measure the voltage of the (T313) Mode Sensor Signal circuit at the Transfer Case (4WD) Switch harness connector.
Is the voltage above 0.2 volts?
Yes
No
6.
(K91) SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE
Measure the voltage of the (K91) Sensor Ground circuit at the Transfer Case (4WD) Switch harness connector.
Is the voltage above 0.2 volts?
Yes
No
7.
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