B1132

DTC B1132 Starter circuit fail

CAUTION:
When replacing the ECU, always check that the communication circuit is normal.

DIAGNOSTIC FUNCTION

When a short circuit (short to power supply) of starter setting circuit system is detected, or when an error to the starter starting circuit system is judged, OSS-ECU sets the DTC B1132.
At the same time, OSS-ECU displays the power supply system error warning screen to the multi information display of the combination meter.

DTC SET CONDITION

Check Conditions

- After OSS-ECU activation
Judgment Criterion

- When the following conditions are met:
1. When the starter setting signal is OFF, the cranking signal is received from ECM.
2. When the starter setting signal is OFF, the ignition start signal is received from ETACS-ECU.

TROUBLESHOOTING HINTS

- Damaged wiring harness or connector (short to power supply in STO line or STOE line)
- Engine starting circuit system error (NTSW line)
- Malfunction of ECM
- ETACS-ECU malfunction
- Malfunction of OSS-ECU

DIAGNOSIS

STEP 1. Using scan tool MB991958, check other system data list.

(1)
CAUTION:
To prevent damage to scan tool (MB991958), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (MB991958).

Connect scan tool MB991958. Refer to "How to connect scan tool (M.U.T.-III) Reading and Clearing Diagnostic Trouble Codes."

(2)After performing the forced power supply output (refer to forced power supply output procedure Programming and Relearning) "IG-ON".

(3)Check the ECM data list.

- Item No. 79: Cranking signal Data List Reference Table ).

(4)Turn the power supply mode of the engine switch to OFF.

Q. Is the check result normal?

YES Go to Step 2
NO Carry out the troubleshooting for the DTC B1131. Refer to diagnostic trouble code chart Keyless Operation System (KOS).
STEP 2. Open circuit or short circuit in NTSW line between starter relay connector and ECM connector

Q. Is the check result normal?

YES Go to Step 3
NO Repair the connector(s) or wiring harness.
STEP 3. Using scan tool MB991958, check other system data list.

(1)
CAUTION:
To prevent damage to scan tool (MB991958), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (MB991958).

Connect scan tool MB991958. Refer to "How to connect scan tool (M.U.T.-III) Reading and Clearing Diagnostic Trouble Codes."

(2)After performing the forced power supply output (refer to forced power supply output procedure Programming and Relearning) "IG-ON".

(3)Check the ASC-ECU data list.

- Item No. 87: Ignition switch (input value) Data List Reference Table ).

(4)Turn the power supply mode of the engine switch to OFF.

Q. Is the check result normal?

YES Go to Step 4.
NO Replace the ETACS-ECU.
STEP 4. Check whether the DTC is reset.

Q. Is the DTC set?

YES (Set after 10 seconds or more have elapsed since the engine switch ON) : Replace the ECM and register the VIN and key codes Testing and Inspection).
YES (Set within 10 seconds since the engine switch ON) : Replace the OSS-ECU and register the VIN (Refer to Programming and Relearning).
NO : Intermittent malfunction is suspected How to Cope With Intermittent Malfunctions).