Code No.C1616: Cranking Signal System (ON Sticking)












caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
  • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION



DIAGNOSIS CODE SET CONDITIONS



PROBABLE CAUSES



  • Malfunction of the ETACS-ECU
  • Ignition switch malfunction
  • Damaged harness wires and connectors
  • Malfunction of AWC-ECU

DIAGNOSIS PROCEDURE

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 reset.

Q. Is diagnosis code No.C1616 set?
Go to Step 3.
This diagnosis is complete.

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

  • Check the KOS diagnosis code. (Refer to GROUP 42B - Troubleshooting ).
  • Check the WCM diagnosis code. (Refer to GROUP 42C - Troubleshooting ).
  • Check the ETACS diagnosis code. (Refer to GROUP 54A - Troubleshooting ).

Q. Is the diagnosis code set?
Perform the relevant troubleshooting.
Go to Step 4.

STEP 4. M.U.T.-III data list.
Item 42: Ignition switch (Refer to data list reference table .)

Q. Is the check result normal?
Go to Step 9.
Go to Step 5.

STEP 5. Ignition switch check
(1)Disconnect C-212 ignition switch connector, and check the continuity between the terminals No.1 and No.5 at the ignition switch side.
(2)Turn the ignition switch to the "ON" position.
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 10.

STEP 6. Ignition switch connector, ETACS-ECU connector check: C-212, C-315

Q. Is the check result normal?
Go to Step 7.
Repair the defective connector. Then go to Step 10.

TEP 7. Check the wiring harness between C-212 ignition switch connector terminal No.5 and C-315 ETACS-ECU connector terminal No.7.
Check the power supply line for short (for short to the power supply) circuit.

Q. Is the check result normal?
Go to Step 8.
Repair the wiring harness. Then go to Step 10.

STEP 8. M.U.T.-III data list.
ETACS item No.287: Starter switch (Refer to GROUP 54A - ETACS ).

Q. Is the check result normal?
Go to Step 9.
Replace the ETACS-ECU. (Refer to GROUP 54A - ETACS-ECU ). Then go to Step 9.

STEP 9. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.C1616 set?
Replace the AWC-ECU. (Refer to ). Then go to Step 10.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 10. Check whether the diagnosis code is reset.

Q. Is diagnosis code No.C1616 set?
Return to Step 1.
This diagnosis is complete.