Code No.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 diagnosis code No.B1132. At the same time, OSS-ECU displays the power supply system error warning screen to the multi information display of the combination meter.

JUDGEMENT CRITERIA

Check Conditions

After OSS-ECU activation

Judgment Criterion

When the following conditions are met:

When the starter setting signal is OFF, the cranking signal is received from engine-ECU.
When the starter setting signal is OFF, the ignition start signal is received from ETACS-ECU.

PROBABLE CAUSES

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

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system data list

Check the engine-ECU data list.

Item No. 79: Cranking signal (Refer to GROUP 13A - Troubleshooting, Service Data Reference Table .)

Q. Is the check result normal?

	Go to Step 2

	Carry out the troubleshooting for the diagnosis code No.B1131. Refer to .

STEP 2. Check of short to power supply, short to earth, and open circuit in NTSW line between starter relay connector and engine-ECU connector

Q. Is the check result normal?

	Go to Step 3

	Repair the connector(s) or wiring harness.

STEP 3. M.U.T.-III other system data list

Check the ABS-ECU data list or ASC-ECU data list.

Item No. 87: Ignition switch (input value) (Refer to GROUP 35B - Troubleshooting <ABS> or GROUP 35C - Troubleshooting <ASC>.)

Q. Is the check result normal?

	Go to Step 4

	Replace the ETACS-ECU.

STEP 4. Check whether the diagnosis code is reset.

Q. Is the diagnosis code set?

	YES (Set after 10 seconds or more have elapsed since the engine switch ON) : Replace the engine-ECU and register the chassis number and key codes [Refer to GROUP 00 - How to Perform Chassis Number (Chassis No.) Writing ].

	YES (Set within 10 seconds since the engine switch ON) : Replace the OSS-ECU and register the chassis number (Refer to ).

	NO : Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).