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DTC B1132: Starter circuit fail
 
 
cautionWhen replacing the ECU, always check that the communication circuit is normal.
 
 
TECHNICAL DESCRIPTION (COMMENT)
When the engine starting circuit system "ON" status is received while the starter setting circuit system is "OFF", the starter setting circuit system determines that the system is detected and the KOS&OSS-ECU sets DTC B1132. At the same time, KOS&OSS-ECU displays the power supply system error warning to the combination meter.
 
 
DTC SET CONDITION
Check Conditions
  • After KOS&OSS-ECU activation
Judgment Criterion
  • When the starter setting signal is "OFF", the cranking signal is received from engine control module.
 
 
TROUBLESHOOTING HINTS
  • Damaged wiring harness or connector (short to power supply in ST line)
  • Malfunction of engine control module
  • Malfunction of KOS&OSS-ECU
 
 
DIAGNOSIS
STEP 1. Check of short or open circuit in ST line between KOS&OSS-ECU connector and engine control module connector.
Is the check result normal?
Go to Step 2.
Repair the connector(s) or wiring harness.
 
STEP 2. Using scan tool (M.U.T.-III), check other system data list.
(1)
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the "OFF" position before connecting or disconnecting scan tool (M.U.T.-III).
Connect scan tool (M.U.T.-III) [Refer to "How to connect scan tool (M.U.T.-III) "].
(2) Check the engine control module data list.
  • Item No. 79: Cranking signal (Refer to GROUP 13A, Troubleshooting, Service Data Reference Table ).
(3) Turn the power supply mode of the engine switch to "OFF".
Is the check result normal?
Go to Step 3.
Carry out the troubleshooting for the DTC B1131 (Refer to diagnostic trouble code chart ).
 
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set in the KOS&OSS-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from "OFF" to "ON".
(3) On completion, check that the DTC is not set, after 10 seconds or more have elapsed since the engine switch "ON".
(4) Check if DTC is set.
Is the DTC set?
Replace the engine control module and register the VIN and key codes (Refer to GROUP 00, How to Perform VIN Writing ), and go to Step 4.
Intermittent malfunction is suspected (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
 
STEP 4 Recheck for diagnostic trouble code.
Check again if the DTC is set in the KOS&OSS-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from "OFF" to "ON".
(3) On completion, check that the DTC is not set, after 10 seconds or more have elapsed since the engine switch "START".
(4) Check if DTC is set.
Is the DTC set?
Replace the engine control module and register the VIN and key codes (Refer to GROUP 00, How to Perform VIN Writing ), and go to Step 5.
Intermittent malfunction is suspected (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
 
STEP 5 Recheck for diagnostic trouble code.
Check again if the DTC is set in the KOS&OSS-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from "OFF" to "ON".
(3) Check if DTC is set.
Is the DTC set?
Replace the KOS&OSS-ECU and register the VIN (Refer to ).
Intermittent malfunction is suspected (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).