DTC U1177-87: Lost Communication with Side Obstacle Detection Control Module "A" (ch2) Missing Message; DTC U117887: Lost Communication with Side Obstacle Detection Control Module "B" (ch2) Missing Message [10/2018 - ]: Procedure
- CHECK FOR DTC
- Using the Techstream, check for parking support brake system DTCs.
Refer to DTC CHECK / CLEAR [10/2018 - ]
Body Electrical > Clearance Warning > Trouble Codes
Result
Result Proceed to DTC U117787 only is output A DTC U117887 only is output B DTC U117787 and U117887 are output C
Result:
B
See step 4
Result:
C
See step 6
Result:
A
See step 2
- Using the Techstream, check for parking support brake system DTCs.
- CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH (B) - BODY GROUND)
- Disconnect the connector of the blind spot monitor sensor LH (B) connector.
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor LH (B)) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q4-10 (BLGD) - Body ground Always Below 1 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 3
- Disconnect the connector of the blind spot monitor sensor LH (B) connector.
- CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH (B) - POWER SOURCE)
- Disconnect the connector of the blind spot monitor sensor LH (B).
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor LH (B)) - Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition Q4-5 (BLB) - Body ground Ignition Switch ON 11 to 14 V Q4-5 (BLB) - Body ground Ignition switch off Below 1 V Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR LH (B). Refer to REMOVAL [10/2018 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Disconnect the connector of the blind spot monitor sensor LH (B).
- CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH (A) - BODY GROUND)
- Disconnect the connector of the blind spot monitor sensor RH (A).
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor RH (A)) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q5-10 (BRGD) - Body ground Always Below 1 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 5
- Disconnect the connector of the blind spot monitor sensor RH (A).
- CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH (A) - POWER SOURCE)
- Disconnect the blind spot monitor sensor RH (A) connector.
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor RH (A)) - Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition Q5-5 (BRB) - Body ground Ignition switch ON 11 to 14 V Q5-5 (BRB) - Body ground Ignition switch off Below 1 V Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR RH (A). Refer to REMOVAL [10/2018 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
- Disconnect the blind spot monitor sensor RH (A) connector.
- CHECK CAN BUS (CONFIRM PROBLEM SYMPTOMS)
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Measure the resistance according to the value(s) in the table below.
*a Component with wire harness connected
(Clearance warning ECU Assembly)*1 DLC3 Standard Resistance
Tester Connection Condition Specified Condition Confirm the problem symptoms F62-37 (CANH) - F62-38 (CANL) Disconnect cable from negative (-) auxiliary battery terminal 54 to 69 Ω Below 54 Ω: Short in line 70 Ω or higher: Open in main line F62-37 (CANH) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω: Short to ground F62-38 (CANL) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher Below 200 Ω: Short to ground F62-37 (CANH) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ: Short to +B F62-38 (CANL) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher Below 6 kΩ: Short to +B Result
Result Proceed to OK A NG (open in main line) B NG (short in line) C NG (short to +B or ground) D
Result:
B
See step 9
Result:
C
See step 13
Result:
D
See step 17
Result:
A
See step 7
- CLEAR DTCS
- Using the Techstream, clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2018 - ]
Body Electrical > Clearance Warning > Clear DTCs
Result
Proceed to NEXT
Result:
NEXT
See step 8
- Using the Techstream, clear the DTCs.
- CHECK FOR DTC
- Check for DTCs.
Refer to DTC CHECK / CLEAR [10/2018 - ]
Body Electrical > Clearance Warning > Trouble Codes
Result
Result Proceed to DTC U117787 and U117887 are output A DTC U117787 and U117887 are not output B
Result:
A
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]
Result:
B
GO TO PROBLEM SYMPTOM SIMULATION METHOD. Refer to PROBLEM SYMPTOMS TABLE [10/2018 - 07/2022] Refer to PROBLEM SYMPTOMS TABLE [07/2022 - ]
- Check for DTCs.
- CHECK FOR OPEN IN CAN BUS WIRE (NO. 5 JUNCTION CONNECTOR)
- Disconnect the No. 5 CAN junction connectors.
*a Front view of wire harness connector
(to No. 5 CAN Junction Connector)*b to Clearance Warning ECU Assembly CAN Wire *c to Blind Spot Monitor Sensor RH (A) CAN Main Wire *d to Blind Spot Monitor Sensor LH (B) CAN Main Wire - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F91-6 (CANH) - F91-17 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher F92-5 (CANH) - F92-16 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω F92-6 (CANH) - F92-17 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Result Proceed to OK A NG (to blind spot monitor sensor LH (B) CAN main wire) B NG (to blind spot monitor sensor RH (A) CAN main wire) C NG (to clearance warning ECU assembly CAN wire) D
Result:
A
REPLACE NO. 5 CAN JUNCTION CONNECTOR
Result:
C
See step 11
Result:
D
See step 12
Result:
B
See step 10
- Disconnect the No. 5 CAN junction connectors.
- CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR LH (B))
- Reconnect the F92 No. 5 CAN junction connector.
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor LH (B)) - Disconnect the Q4 blind spot monitor sensor LH (B) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q4-1 (CA2P) - Q4-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR LH (B). Refer to REMOVAL [10/2018 - ]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH (B) - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the F92 No. 5 CAN junction connector.
- CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR RH (A))
- Reconnect the F92 No. 5 CAN junction connector.
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor RH (A)) - Disconnect the Q5 blind spot monitor sensor RH (A) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q5-1 (CA2P) - Q5-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR RH (A). Refer to REMOVAL [10/2018 - ]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH (A) - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the F92 No. 5 CAN junction connector.
- CHECK FOR OPEN IN CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY)
- Reconnect the No. 5 CAN junction connectors.
*a Front view of wire harness connector
(to Clearance Warning ECU Assembly) - Disconnect the F62 clearance warning ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F62-37 (CANH) - F62-38 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
OK
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]
Result:
NG
REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the No. 5 CAN junction connectors.
- CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR)
- Disconnect the No. 5 CAN junction connectors.
*a Front view of wire harness connector
(to No. 5 CAN Junction Connector)*b to Clearance Warning ECU Assembly CAN Wire *c to Blind Spot Monitor Sensor RH (A) CAN Main Wire *d to Blind Spot Monitor Sensor LH (B) CAN Main Wire - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F91-6 (CANH) - F91-17 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher F92-5 (CANH) - F92-16 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω F92-6 (CANH) - F92-17 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Result Proceed to OK A NG (to blind spot monitor sensor LH (B) CAN main wire) B NG (to blind spot monitor sensor RH (A) CAN main wire) C NG (to clearance warning ECU assembly CAN wire) D
Result:
A
REPLACE NO. 5 CAN JUNCTION CONNECTOR
Result:
C
See step 15
Result:
D
See step 16
Result:
B
See step 14
- Disconnect the No. 5 CAN junction connectors.
- CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH (B))
- Reconnect the F92 No. 5 CAN junction connector.
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor LH (B)) - Disconnect the Q4 blind spot monitor sensor LH (B) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q4-1 (CA2P) - Q4-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR LH (B). Refer to REMOVAL [10/2018 - ]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH (B) - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the F92 No. 5 CAN junction connector.
- CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH (A))
- Reconnect the F92 No. 5 CAN junction connector.
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor RH (A)) - Disconnect the Q5 blind spot monitor sensor RH (A) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q5-1 (CA2P) - Q5-6 (CA2N) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR RH (A). Refer to REMOVAL [10/2018 - ]
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH (A) - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the F92 No. 5 CAN junction connector.
- CHECK FOR SHORT IN CAN BUS WIRES (CLEARANCE WARNING ECU ASSEMBLY)
- Reconnect the No. 5 CAN junction connectors.
*a Front view of wire harness connector
(to Clearance Warning ECU Assembly) - Disconnect the F62 clearance warning ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F62-37 (CANH) - F62-38 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
OK
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]
Result:
NG
REPAIR OR REPLACE CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the No. 5 CAN junction connectors.
- CHECK FOR SHORT IN CAN BUS (BLIND SPOT MONITOR SENSOR LH (B) CONNECTION MAIN LINE)
- Disconnect the No. 5 CAN junction connector.
*a Front view of wire harness connector
(to No. 5 CAN Junction Connector)*1 DLC3 - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F92-5 (CANH) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher F92-16 (CANL) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher F92-5 (CANH) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher F92-16 (CANL) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher HINT:
Check for short that was confirmed to be a malfunction by confirming symptoms.
Result
Proceed to OK NG
Result:
NG
See step 22
Result:
OK
See step 18
- Disconnect the No. 5 CAN junction connector.
- CHECK FOR SHORT IN CAN BUS (BLIND SPOT MONITOR SENSOR RH (A) CONNECTION MAIN LINE)
- Disconnect the No. 5 CAN junction connector.
*a Front view of wire harness connector
(to No. 5 CAN Junction Connector)*1 DLC3 - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F92-6 (CANH) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher F92-17 (CANL) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher F92-6 (CANH) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher F92-17 (CANL) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher HINT:
Check for short that was confirmed to be a malfunction by confirming symptoms.
Result
Proceed to OK NG
Result:
NG
See step 21
Result:
OK
See step 19
- Disconnect the No. 5 CAN junction connector.
- CHECK FOR SHORT IN CAN BUS (CLEARANCE WARNING ECU ASSEMBLY CONNECTION BRANCH LINE)
- Reconnect the No. 5 CAN junction connector.
*a Front view of wire harness connector
(to No. 5 CAN Junction Connector)*1 DLC3 - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F91-6 (CANH) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher F91-17 (CANL) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher F91-6 (CANH) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher F91-17 (CANL) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher HINT:
Check for short that was confirmed to be a malfunction by confirming symptoms.
Result
Proceed to OK NG
Result:
OK
REPLACE NO. 5 CAN JUNCTION CONNECTOR
Result:
NG
See step 20
- Reconnect the No. 5 CAN junction connector.
- CHECK FOR SHORT IN CAN BUS (CLEARANCE WARNING ECU ASSEMBLY)
- Reconnect the F92 No. 5 CAN junction connector.
*a Front view of wire harness connector
(to Clearance Warning ECU Assembly)*1 DLC3 - Disconnect the connector of the clearance warning ECU assembly.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F62-37 (CANH) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher F62-38 (CANL) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher F62-37 (CANH) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher F62-38 (CANL) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]
Result:
NG
REPAIR OR REPLACE CAN BUS BRANCH LINE OR CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the F92 No. 5 CAN junction connector.
- CHECK FOR SHORT IN CAN BUS (BLIND SPOT MONITOR SENSOR RH (A))
- Reconnect the F92 No. 5 CAN junction connector.
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor RH (A))*1 DLC3 - Disconnect the Q5 blind spot monitor sensor RH (A).
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q5-1 (CA2P) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher Q5-6 (CA2N) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher Q5-1 (CA2P) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher Q5-6 (CA2N) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR RH (A). Refer to REMOVAL [10/2018 - ]
Result:
NG
REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH (A) - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the F92 No. 5 CAN junction connector.
- CHECK FOR SHORT IN CAN BUS (BLIND SPOT MONITOR SENSOR LH (B))
- Reconnect the F92 No. 5 CAN junction connector.
*a Front view of wire harness connector
(to Blind Spot Monitor Sensor LH (B))*1 DLC3 - Disconnect the connector of the blind spot monitor sensor LH (B).
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q4-1 (CA2P) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher Q4-6 (CA2N) - Body ground Disconnect cable from negative (-) auxiliary battery terminal 200 Ω or higher Q4-1 (CA2P) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher Q4-6 (CA2N) - F58-16 (BAT) Disconnect cable from negative (-) auxiliary battery terminal 6 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE BLIND SPOT MONITOR SENSOR LH (B). Refer to REMOVAL [10/2018 - ]
Result:
NG
REPAIR OR REPLACE CAN BUS MAIN LINE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH (B) - NO. 5 CAN JUNCTION CONNECTOR)
- Reconnect the F92 No. 5 CAN junction connector.