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P0836-TRANSFER CASE POSITION SENSOR PLAUSIBILITY —
TRANSFER CASE POSITION SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND CIR-
CUIT
ENGINE CONTROL MODULE
TEST
1
With the DRBIII , record and erase DTCs.
Start the engine and cycle the Transfer Case through all positions.
With the DRBIII , read the ECM DTCs.
Does the DRBIII display this DTC?
Yes → Go To 2
→ Go To 7
No
2
Turn the ignition off to the lock position.
Disconnect the ECM harness connectors.
Disconnect the Transfer Case Position Sensor harness connector.
Remove the ASD Relay.
Connect a jumper wire between cavities 30 and 87 of the ASD Relay connector in the
PDC.
Turn the ignition on.
Measure the voltage of the Transfer Case Position Sensor Signal circuit.
Is the voltage above 1.0 volt?
Yes → Repair the Transfer Case Position Sensor Signal circuit for a short
→ Go To 3
No
3
Turn the ignition off to the lock position.
Disconnect the ECM harness connectors.
Disconnect the Transfer Case Position Sensor harness connector.
Measure the resistance of the Transfer Case Position Sensor Signal circuit.
Is the resistance below 10.0 ohms?
Yes → Go To 4
→ Repair the Transfer Case Position Sensor Signal circuit for an
No
4
Turn the ignition off to the lock position.
Disconnect the ECM harness connectors.
Disconnect the Transfer Case Position Sensor harness connector.
Measure the resistance between ground and the Transfer Case Position Sensor
Signal circuit.
Is the resistance below 1000.0 ohms?
Yes → Repair the Transfer Case Position Sensor Signal circuit for a short
→ Go To 5
No
POSSIBLE CAUSES
ACTION
to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
open.
Perform ROAD TEST VERIFICATION - VER-2.
to ground.
Perform ROAD TEST VERIFICATION - VER-2.
DRIVEABILITY - DIESEL
159
Continued
APPLICABILITY
All
All
All
All
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