DESCRIPTION This DTC is
stored when the blind spot monitor sensor RH judges that there is a
communication problem with the blind spot monitor sensor LH. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area | |
U0232 | Lost Communication with Blind Spot Monitor Slave Module |
The blind spot monitor sensor (master) cannot receive signals from the blind spot monitor sensor (slave) |
- Open or short in CAN bus main wire or connector
- Open or short in NO. 26 junction connector
- Blind spot monitor sensor LH
- Power source circuit of blind spot monitor sensor LH
- Blind spot monitor sensor LH ground circuit
- Blind spot monitor sensor RH
- Wire harness or connector
| WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- When checking for DTCs, make sure that the blind spot monitor system is turned on.
- Inspect the fuses for circuits related to this system before performing the following procedure.
- Before measuring the resistance of the CAN bus, turn the engine switch
off and leave the vehicle for 1 minute or more without operating the key
or any switches, or opening or closing the doors. After that,
disconnect the cable from the negative (-) battery terminal and leave
the vehicle for 1 minute or more before measuring the resistance.
- After turning the engine switch off, waiting time may be required before
disconnecting the cable from the negative (-) battery terminal.
Therefore, make sure to read the disconnecting the cable from the
negative (-) battery terminal notices before proceeding with work.
Click here 
HINT:
- Operating the engine switch, any other switches or a door triggers
related ECU and sensor communication on the CAN. This communication will
cause the resistance value to change.
- Even after DTCs are cleared, if a DTC is stored again after driving the
vehicle for a while, the malfunction may be occurring due to vibration
of the vehicle. In such a case, wiggling the ECUs or wire harness while
performing the inspection below may help determine the cause of the
malfunction.
PROCEDURE |
1. | CHECK CAN BUS MAIN WIRE |
(a) Turn the engine switch off. (b) Disconnect the cable from the negative (-) battery terminal.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | Result | |
P5-1 (CA2P) - P5-6 (CA2N) |
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 | |
P5-1 (CA2P) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | Below 200 Ω: CA2P short to ground | |
P5-6 (CA2N) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | Below 200 Ω: CA2N short to ground | |
P5-1 (CA2P) - G45-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | Below 6 kΩ: CA2P +B short | |
P5-6 (CA2N) - G45-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | Below 6 kΩ: CA2N +B short | |
 |
|
*1 | DLC3 | |
*a | Component with harness connected
(Blind Spot Monitor Sensor RH) | | |
(d) Reconnect the cable to the negative (-) battery terminal.
|
Result | Proceed to | |
OK | A | |
Open circuit in CAN main bus lines |
B | | Short circuit between bus lines |
C | |
| D |
| B |
 | GO TO STEP 5 |
| C |
| GO TO STEP 8 |
| D |
| GO TO STEP 11 |
|
A |
 | |
| 2. |
CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH - BODY GROUND) |
Click here
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 3. |
CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH - POWER SOURCE) |
Click here
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
(a) Turn the engine switch off.
(b) Turn the engine switch on (IG). (c) Check for DTCs. Body Electrical > Blind Spot Monitor Master > Trouble Codes
OK: No DTCs are output.
| OK | |
SYMPTOM SIMULATION |
| NG |
| REPLACE BLIND SPOT MONITOR SENSOR LH |
| 5. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 26 JUNCTION CONNECTOR) |
| (a) Disconnect the K68 No. 26 junction connector. |
 |
|
*a | Front view of wire harness connector
(to No. 26 Junction Connector) | |
*b | to Blind Spot Monitor Sensor RH CAN main wire | |
*c | to Blind Spot Monitor Sensor LH CAN main wire | | |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K68-3 (CANH) - K68-14(CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω | |
K68-2 (CANH) - K68-13(CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
|
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 |
| A |
| REPLACE NO. 26 JUNCTION CONNECTOR |
| C |
| GO TO STEP 7 |
|
B | |
| |
| 6. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR RH) |
(a) Reconnect the K68 No. 26 junction connector.
| (b) Disconnect the P5 blind spot monitor sensor RH connector. |
 |
|
*a | Front view of wire harness connector
(to Blind Spot Monitor Sensor RH) | | |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
P5-1 (CA2P) - P5-6 (CA2N) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
| OK |
| REPLACE BLIND SPOT MONITOR SENSOR RH |
| NG |
| REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - No. 26 JUNCTION CONNECTOR) |
| 7. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (BLIND SPOT MONITOR SENSOR LH) |
(a) Reconnect the K68 No. 26 junction connector.
| (b) Disconnect the P6 blind spot monitor sensor LH connector. |
 |
|
*a | Front view of wire harness connector
(to Blind Spot Monitor Sensor LH) | | |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
P6-1 (CA2P) - P6-6 (CA2N) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
| OK |
| REPLACE BLIND SPOT MONITOR SENSOR LH |
| NG |
| REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 26 JUNCTION CONNECTOR) |
| 8. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 26 JUNCTION CONNECTOR) |
| (a) Disconnect the K68 No. 26 junction connector. |
 |
|
*a | Front view of wire harness connector
(to No. 26 Junction Connector) | |
*b | to Blind Spot Monitor Sensor RH CAN main wire | |
*c | to Blind Spot Monitor Sensor LH CAN main wire | | |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K68-3 (CANH) - K68-14 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω | |
K68-2 (CANH) - K68-13 (CANL) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
|
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 |
| A |
| REPLACE NO. 26 JUNCTION CONNECTOR |
| C |
| GO TO STEP 10 |
|
B | |
| |
| 9. |
CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH) |
(a) Reconnect the K68 No. 26 junction connector.
| (b) Disconnect the P5 blind spot monitor sensor RH connector. |
 |
|
*a | Front view of wire harness connector
(to Blind Spot Monitor Sensor RH) | | |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
P5-1 (CA2P) - P5-6 (CA2N) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
| OK |
| REPLACE BLIND SPOT MONITOR SENSOR RH |
| NG |
| REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 26 JUNCTION CONNECTOR) |
| 10. |
CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH) |
(a) Reconnect the K68 No. 26 junction connector.
| (b) Disconnect the P6 blind spot monitor sensor LH connector. |
 |
|
*a | Front view of wire harness connector
(to Blind Spot Monitor Sensor LH) | | |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
P6-1 (CA2P) - P6-6 (CA2N) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω |
| OK |
| REPLACE BLIND SPOT MONITOR SENSOR LH |
| NG |
| REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 26 JUNCTION CONNECTOR) |
| 11. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 26 JUNCTION CONNECTOR) |
(a) Disconnect the K68 No. 26 junction connector. (b) Measure the resistance according to the value(s) in the table below.
|
*1 | DLC3 |
- | - | |
*a | Front view of wire harness connector
(to No. 26 Junction Connector) |
*b | to Blind Spot Monitor Sensor RH CAN main wire | |
*c | to Blind Spot Monitor Sensor LH CAN main wire |
- | - |
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K68-3 (CANH) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
K68-14 (CANL) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
K68-3 (CANH) - G45-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | |
K68-14 (CANL) - G45-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | |
K68-2 (CANH) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
K68-13 (CANL) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
K68-2 (CANH) - G45-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | |
K68-13 (CANL) - G45-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher |
|
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 |
| A |
| REPLACE NO. 26 JUNCTION CONNECTOR |
| C |
| GO TO STEP 13 |
|
B | |
| |
| 12. |
CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH) |
(a) Reconnect the K68 No. 26 junction connector. (b) Disconnect the P5 blind spot monitor sensor RH connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
P5-1 (CA2P) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
P5-6 (CA2N) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
P5-1 (CA2P) - G45-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | |
P5-6 (CA2N) - G45-16 (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) | | |
| OK |
| REPLACE BLIND SPOT MONITOR SENSOR RH |
| NG |
| REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR RH - NO. 26 JUNCTION CONNECTOR) |
| 13. |
CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH) |
(a) Reconnect the K68 No. 26 junction connector. (b) Disconnect the P6 blind spot monitor sensor LH connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
P6-1 (CA2P) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
P6-6 (CA2N) - G45-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
P6-1 (CA2P) - G45-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | |
P6-6 (CA2N) - G45-16 (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) | | |
| OK |
| REPLACE BLIND SPOT MONITOR SENSOR LH |
| NG |
| REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (BLIND SPOT MONITOR SENSOR LH - NO. 26 JUNCTION CONNECTOR) | | 
