Inspection Procedure 3: The system is not turned on and off by changing the BSW setting: Diagnosis

STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE).
1. Connect scan tool (M.U.T.-IIISE). Refer to "HOW TO CONNECT THE SCAN TOOL (M.U.T.-IIISE) ."
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Is the CAN bus line found to be normal?
  
  YES: Go to Step 2.
  
  NO: Repair the CAN bus line (Refer to TROUBLESHOOTING ).
STEP 2. Using scan tool (M.U.T.-IIISE), read the other system DTC.
Check the DTC is set in the combination meter.

Q: Is the DTC set?

YES: Diagnose the combination meter (Refer to DIAGNOSTIC TROUBLE CODE CHART ).

NO: Go to Step 3.

STEP 3. Using scan tool (M.U.T.-IIISE), check data list.

Check the following data list (Refer to DATA LIST REFERENCE TABLE ).

When the BSW setting operation.

Item No.

Item name

Check condition

Normal condition

14

BSW ON/OFF setting signal

No BSW ON/OFF SW operation

No Request

BSW OFF SW input

OFF⁽¹⁾

BSW ON SW input

ON⁽¹⁾

⁽¹⁾	Output for 200 ms.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES: Go to Step 4.

NO: Replace the combination meter.

STEP 4. Retest the system.
Check whether the system can be switched on and off by the BSW setting.

Q: Is the check result normal?

YES: Intermittent malfunction is suspected (Refer to How to use Troubleshooting/inspection Service Points - HOW TO COPE WITH INTERMITTENT MALFUNCTION ).

NO: Replace the BSW-ECU (master).