TEST
ACTION
APPLICABILITY
2
With the DRB, select ENGINE, then BOSCH 3.1L VM DIESEL CONTROLLER from
the menu.
Display the Vehicle Identification Number (VIN).
Compare the programmed VIN to the vehicle VIN.
Does the programmed VIN match the vehicle VIN?
All
Yes
→
Go To
3
No
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
3
With the DRB, select ENGINE, then JTEC CONTROLLER from the menu.
Display the Vehicle Identification Number (VIN).
Compare the programmed VIN to the vehicle VIN.
Does the programmed VIN match the vehicle VIN?
All
Yes
→
Go To
4
No
→
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
4
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Remove the ASD/Diesel Power Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ASD/Diesel Power
Relay connector.
Turn the ignition on.
Measure the voltage of the Immobilizer Signal circuit.
Is the voltage below 1.0 volt?
All
Yes
→
Go To
5
No
→
Repair the Immobilizer Signal circuit for a short to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
NOTE: Remove the jumper wire and install the ASD/Diesel Power Relay.
5
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the Immobilizer Signal circuit.
Is the resistance above 100 kohms?
All
Yes
→
Go To
6
No
→
Repair the Immobilizer Signal circuit for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
6
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Measure the resistance of the Immobilizer Signal circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
7
No
→
Repair the Immobilizer Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
152
DRIVEABILITY - DIESEL
P1685-VEHICLE THEFT ALARM IMMOBILIZER SIG LOST —
Continued