Inspection Procedure 4: The engine does not start. (cranking occurs but initial combustion does not) <Diesel powered vehicle>

COMMENTS ON TROUBLE SYMPTOM

If the fuel injection does not work, the immobilizer-ECU and the diesel fuel system may be defective. It is no problem with the malfunction above when the engine is started with unregistered ignition key.

PROBABLE CAUSES

Malfunction of diesel fuel system
Malfunction of immobilizer-ECU
Damaged harness wires and connectors
Malfunction of ignition key
Chassis No. not written

DIAGNOSIS PROCEDURE

STEP 1. Battery voltage check

Measure the battery voltage when cranking.
OK: 8 V or more

Q. Is the check result normal?

Go to Step 2.

Check the battery. Refer to GROUP 54A - On-vehicle service

STEP 2. M.U.T.-III CAN bus diagnostics

Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 3.

Repair the CAN bus line (Refer to GROUP 54D - Troubleshooting

STEP 3. M.U.T.-III other system diagnosis code

Check whether the diesel fuel system-related diagnosis code is set.

Q. Is the diagnosis code set?

Refer to GROUP 13D - Troubleshooting

Go to Step 4.

STEP 4. M.U.T.-III diagnosis code

Check whether the engine immobilizer system-related diagnosis code is set.

Q. Is the diagnosis code set?

Refer to

Go to Step 5.

STEP 5. Check that the engine starts.

Q. Does the engine start?

The procedure is complete.

Refer to GROUP 13D - Troubleshooting

. Replace the immobilizer ECU and register the ID codes when the cause of the failure cannot be tracked down by performing the troubleshooting in GROUP 54A (Refer to