Code No.C1616: Cranking signal stuck
caution |
- If there is any problem in the CAN bus lines, an incorrect diagnosis code may be stored. Prior to this diagnosis, diagnose the CAN bus lines.
- Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
- When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System - How to Register Key ID
.)
|
OPERATION
4WD-ECU receives the signal of the ignition switch from ETACS-ECU via CAN communication.
DIAGNOSIS CODE SET CONDITION
The cranking signal is set for 5 seconds or more continuously while driving
PROBABLE CAUSES
- Malfunction of the ETACS-ECU
- Ignition switch malfunction
- Damaged harness wires and connectors
- Malfunction of 4WD-ECU
|
STEP 1. M.U.T.-III CAN bus diagnostics.
|
|
Use M.U.T.-III to perform the CAN bus diagnosis.
|
|
Q.
Is the check result normal?
|
|
Go to Step 3
|
|
|
|
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ). After repairing the CAN bus line, go to Step 2.
|
|
|
|
STEP 2. Check whether the diagnosis code is stored again.
|
|
Q.
Is diagnosis code No.C1616 stored?
|
|
Go to Step 3
|
|
|
|
This diagnosis is complete.
|
|
|
|
STEP 3. M.U.T.-III other system diagnosis code.
|
|
- Check the KOS diagnosis code (Refer to GROUP 42B - Troubleshooting
).
- Check the ETACS diagnosis code (Refer to GROUP 54A - Troubleshooting
).
|
|
Q.
Is the diagnosis code stored?
|
|
Perform the relevant troubleshooting.
|
|
|
|
Go to Step 4
|
|
|
|
STEP 4. M.U.T.-III data list.
|
|
Check the following data list (Refer to ).
|
|
- Item No.30: Ignition SW (CAN input)
|
|
Q.
Is the check result normal?
|
|
Go to Step 8
|
|
|
|
Go to Step 5
|
|
|
|
STEP 5. Ignition switch check
|
|
(1)Disconnect ignition switch connector.
|
|
(2)Turn the ignition switch to the "ON" position.
|
|
(3)Check the continuity between the power supply and start signal at the ignition switch side. OK: No continuity
|
|
Q.
Is the check result normal?
|
|
Go to Step 6
|
|
|
|
Replace the ignition switch. (Refer to GROUP 54A - Ignition Switch ). Then go to Step 9.
|
|
|
|
STEP 6. Check of short circuit in start signal line between ignition switch connector and ETACS-ECU connector.
|
|
Q.
Is the check result normal?
|
|
Go to Step 7
|
|
|
|
Repair the defective connector or the wiring harness. Then go to Step 9.
|
|
|
|
STEP 7. M.U.T.-III data list.
|
|
Check the data list of the ETACS (Refer to GROUP 54A - ETACS ).
|
|
- Item No.287: Starter switch
|
|
Q.
Is the check result normal?
|
|
Go to Step 8
|
|
|
|
Replace the ETACS-ECU. (Refer to GROUP 54A - ETACS-ECU .) Then go to Step 8.
|
|
|
|
STEP 8. Check whether the diagnosis code is stored again.
|
|
Q.
Is diagnosis code No.C1616 stored?
|
|
Replace the 4WD-ECU (Refer to ). Then go to Step 9 .
|
|
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
|
|
|
|
STEP 9. Check whether the diagnosis code is stored again.
|
|
Q.
Is diagnosis code No.C1616 stored?
|
|
Return to Step 1.
|
|
|
|
This diagnosis is complete.
|
|
|