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. | DTC Detection Condition |
Trouble Area | | U0232 |
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
- 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
| 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 ignition 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 ignition 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.
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HINT:
- Operating the ignition 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 HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR LH - BATTERY AND BODY GROUND) |
| (a) Disconnect the blind spot monitor sensor LH 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 | |
S5-10 (BLGD) - Body ground |
Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Switch Condition |
Specified Condition | |
S5-5 (BLB) - Body ground |
Ignition switch ON | 11 to 14 V | |
S5-5 (BLB) - Body ground |
Ignition switch off | Below 1 V |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK |
 | |
| 2. |
CHECK FOR OPEN OR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR RH) |
| (a) Disconnect the cable from the negative (-) battery terminal. |
 |
|
*a | Front view of wire harness connector
(to blind spot monitor sensor RH) | |
*b | DLC3 | | |
(b) Disconnect the 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 | |
S6-1 (CA2P) - S6-6 (CA2N) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω | |
S6-1 (CA2P) - J17-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
S6-6 (CA2N) - J17-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
S6-1 (CA2P) - J17-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | |
S6-6 (CA2N) - J17-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher |
| OK |
| REPLACE BLIND SPOT MONITOR SENSOR RH |
|
NG | |
| |
| 3. |
CHECK FOR SHORT IN CAN BUS WIRES (BLIND SPOT MONITOR SENSOR LH) |
| (a) Disconnect the cable from the negative (-) battery terminal. |
 |
|
*a | Front view of wire harness connector
(to blind spot monitor sensor LH) | |
*b | DLC3 | | |
(b) Disconnect the 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 | |
S5-1 (CA2P) - S5-6 (CA2N) |
Cable disconnected from negative (-) battery terminal |
108 to 132 Ω | |
S5-1 (CA2P) - J17-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
S5-6 (CA2N) - J17-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher | |
S5-1 (CA2P) - J17-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher | |
S5-6 (CA2N) - J17-16 (BAT) |
Cable disconnected from negative (-) battery terminal |
6 kΩ or higher |
| OK |
| REPLACE BLIND SPOT MONITOR SENSOR LH |
| NG |
| REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR | |
