DTC U0232: Lost Communication with Blind Spot Monitor Slave Module; DTC U0233: Lost Communication with Blind Spot Monitor Master Module [06/2018 - 09/2022]: Procedure
- CHECK DTC
- Check for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes
Result
Result Proceed to DTC U0232 is only output A DTC U0233 is only output B DTC U0232 and U0233 are output C
Result:
B
See step 5
Result:
C
See step 8
Result:
A
See step 2
- Check for DTCs.
- CHECK CAN BUS MAIN WIRE
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the R5 blind spot monitor sensor LH connector.
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to blind spot monitor sensor LH)Standard Resistance
Tester Connection Condition Specified Condition R5-1 (CA2P) - R5-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 24 JUNCTION CONNECTOR)
Result:
OK
See step 3
- CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH - BODY GROUND)
Refer to PROCEDURE - Step 4
Result
Proceed to OK NG Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 24 JUNCTION CONNECTOR)
Result:
OK
See step 4
- CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH POWER SOURCE)
Refer to PROCEDURE - Step 3
Result
Proceed to OK NG Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- CHECK CAN BUS MAIN WIRE
- Disconnect the cable from the negative (-) battery terminal.
- Disconnect the R4 blind spot monitor sensor RH connector.
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to blind spot monitor sensor RH)Standard Resistance
Tester Connection Condition Specified Condition R4-1 (CA2P) - R4-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 24 JUNCTION CONNECTOR)
Result:
OK
See step 6
- CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - BODY GROUND)
Refer to PROCEDURE - Step 2
Result
Proceed to OK NG Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 24 JUNCTION CONNECTOR)
Result:
OK
See step 7
- CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH POWER SOURCE)
Refer to PROCEDURE - Step 1
Result
Proceed to OK NG Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- CHECK CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR LH)
- Turn the engine switch off.
- Disconnect the cable from the negative (-) battery terminal.
- Measure the resistance according to the value(s) in the table below.
*1 DLC3 *a Component with harness connected
(No. 24 Junction Connector)Standard Resistance
Tester Connection Condition Specified Condition Result N100-1 (CANH) - N100-12 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Below 54 Ω: Short circuit between bus lines 70 Ω or more: Open circuit in main bus lines N100-1 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω: CANH short to ground N100-12 (CANL) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher Below 200 Ω: CANL short to ground N100-1 (CANH) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ: CANH +B short N100-12 (CANL) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Below 6 kΩ: CANL +B short Result
Result Proceed to OK A Open circuit in CAN main bus lines B Short circuit between bus lines C - Short to ground
- +B short
D
Result:
B
See step 11
Result:
C
See step 15
Result:
D
See step 19
Result:
A
See step 9
- CONFIRM CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY)
- Disconnect the N41 clearance warning ECU assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N41-37 (CANH) - N41-38 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω *a Front view of wire harness connector
(to clearance warning ECU assembly)Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - No. 24 JUNCTION CONNECTOR)
Result:
OK
See step 10
- CHECK DTC
- Clear the DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs
- Check for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes
Result
Result Proceed to DTC U0232 and U0233 are output A DTC U0232 and U0233 are not output B
Result:
A
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
B
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]
- Clear the DTCs.
- CHECK FOR OPEN IN CAN BUS WIRE (No. 24 JUNCTION CONNECTOR)
- Disconnect the N100 No. 24 junction connector.
*a Front view of wire harness connector
(to No. 24 Junction Connector)*b to blind spot monitor sensor RH CAN main wire *c to blind spot monitor sensor LH CAN main wire *d to clearance warning ECU assembly CAN wire - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N100-3 (CANH) - N100-14 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω N100-2 (CANH) - N100-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω N100-1 (CANH) - N100-12 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Result
Result Proceed to OK A NG (to blind spot monitor sensor RH CAN main wire) B NG (to blind spot monitor sensor LH CAN main wire) C NG (to clearance warning ECU assembly CAN wire) D
Result:
A
REPLACE No. 24 JUNCTION CONNECTOR
Result:
C
See step 13
Result:
D
See step 14
Result:
B
See step 12
- Disconnect the N100 No. 24 junction connector.
- CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR RH)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the R4 blind spot monitor sensor RH connector.
*a Front view of wire harness connector
(to blind spot monitor sensor RH) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition R4-1 (CA2P) - R4-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 24 JUNCTION CONNECTOR)
- CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR LH)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the R5 blind spot monitor sensor LH connector.
*a Front view of wire harness connector
(to blind spot monitor sensor LH) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition R5-1 (CA2P) - R5-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 24 JUNCTION CONNECTOR)
- CHECK FOR OPEN IN CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the N41 clearance warning ECU assembly connector.
*a Front view of wire harness connector
(to clearance warning ECU assembly) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N41-37 (CANH) - N41-38 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
OK
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - No. 24 JUNCTION CONNECTOR)
- CHECK FOR SHORT IN CAN BUS WIRES (No. 24 JUNCTION CONNECTOR)
- Disconnect the N100 No. 24 junction connector.
*a Front view of wire harness connector
(to No. 24 Junction Connector)*b to blind spot monitor sensor RH CAN main wire *c to blind spot monitor sensor LH CAN main wire *d to clearance warning ECU assembly CAN wire - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N100-3 (CANH) - N100-14 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω N100-2 (CANH) - N100-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω N100-1 (CANH) - N100-12 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Result
Result Proceed to OK A NG (to blind spot monitor sensor RH CAN main wire) B NG (to blind spot monitor sensor LH CAN main wire) C NG (to clearance warning ECU assembly CAN wire) D
Result:
A
REPLACE No. 24 JUNCTION CONNECTOR
Result:
C
See step 17
Result:
D
See step 18
Result:
B
See step 16
- Disconnect the N100 No. 24 junction connector.
- CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the R4 blind spot monitor sensor RH connector.
*a Front view of wire harness connector
(to blind spot monitor sensor RH) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition R4-1 (CA2P) - R4-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 24 JUNCTION CONNECTOR)
- CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the R5 blind spot monitor sensor LH connector.
*a Front view of wire harness connector
(to blind spot monitor sensor LH) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition R5-1 (CA2P) - R5-6 (CA2N) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 24 JUNCTION CONNECTOR)
- CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the N41 clearance warning ECU assembly connector.
*a Front view of wire harness connector
(to clearance warning ECU assembly) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N41-37 (CANH) - N41-38 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
OK
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - No. 24 JUNCTION CONNECTOR)
- CHECK FOR SHORT IN CAN BUS WIRES (No. 24 JUNCTION CONNECTOR)
- Disconnect the N100 No. 24 junction connector.
- Measure the resistance according to the value(s) in the table below.
*1 DLC3 - - *a Front view of wire harness connector
(to No. 24 Junction Connector)*b to blind spot monitor sensor RH CAN main wire *c to blind spot monitor sensor LH CAN main wire *d to clearance warning ECU assembly CAN wire Standard Resistance
Tester Connection Condition Specified Condition N100-3 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N100-14 (CANL) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N100-3 (CANH) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher N100-14 (CANL) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher N100-1 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N100-12 (CANL) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N100-1 (CANH) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher N100-12 (CANL) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher N100-2 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N100-13 (CANL) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N100-2 (CANH) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher N100-13 (CANL) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Result
Result Proceed to OK A NG (to blind spot monitor sensor RH CAN main wire) B NG (to blind spot monitor sensor LH CAN main wire) C NG (to clearance warning ECU assembly CAN wire) D
Result:
A
REPLACE No. 24 JUNCTION CONNECTOR
Result:
C
See step 21
Result:
D
See step 22
Result:
B
See step 20
- CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the R4 blind spot monitor sensor RH connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition R4-1 (CA2P) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher R4-6 (CA2N) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher R4-1 (CA2P) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher R4-6 (CA2N) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher *1 DLC3 *a Front view of wire harness connector
(to blind spot monitor sensor RH)Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR RH. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 24 JUNCTION CONNECTOR)
- CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the R5 blind spot monitor sensor LH connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition R5-1 (CA2P) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher R5-6 (CA2N) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher R5-1 (CA2P) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher R5-6 (CA2N) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher *1 DLC3 *a Front view of wire harness connector
(to blind spot monitor sensor LH)Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR LH. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - No. 24 JUNCTION CONNECTOR)
- CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY)
- Reconnect the N100 No. 24 junction connector.
- Disconnect the N41 clearance warning ECU assembly connector.
*1 DLC3 *a Front view of wire harness connector
(to clearance warning ECU assembly) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N41-37 (CANH) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N41-38 (CANL) - G57-4 (CG) Cable disconnected from negative (-) battery terminal 200 Ω or higher N41-37 (CANH) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher N41-38 (CANL) - G57-16 (BAT) Cable disconnected from negative (-) battery terminal 6 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]
Result:
NG
REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - No. 24 JUNCTION CONNECTOR)