BLIND SPOT MONITORING (BSM) CONTROL MODULE INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE]

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1. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

2. Remove the rear combination light. (See REAR COMBINATION LIGHT REMOVAL/INSTALLATION.)

3. Remove the rear bumper. (See REAR BUMPER REMOVAL/INSTALLATION.)

4. Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

5. Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (reference).

  • If the voltage is not as specified in the terminal voltage table (reference), inspect the parts under Inspection item(s) and related wiring harnesses.
    ― If the system does not operate normally even though the inspection items are normal, replace the BSM control module (RH) or BSM control module (LH).

Terminal Voltage Table (Reference)

BSM control module (LH)

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Terminal | Signal name | Connected to | Measurement conditions | Voltage (V) | Inspection item(s)
--- | --- | --- | --- | --- | ---
A | Local CAN_H | BSM control module (RH) | Because this terminal is for communication, determination using terminal voltage inspection is not possible.
B | Local CAN_L | BSM control module (RH) | Because this terminal is for communication, determination using terminal voltage inspection is not possible.
C | MS-CAN_H | Related module | Because this terminal is for communication, determination using terminal voltage inspection is not possible.
D | MS-CAN_L | Related module | Because this terminal is for communication, determination using terminal voltage inspection is not possible.
E | — | — | — | — | —
F | — | — | — | — | —
G | BSM indicator light (LH) signal | BSM indicator light (LH) | Turn off BSM indicator light using BSM system active command WRN_IND_L | 0.8 or less | BSM indicator light (LH)
Turn on BSM indicator light using rear BSM system active command WRN_IND_L | B+
H | BSM OFF switch signal | BSM OFF switch | Ignition switch at ON | BSM OFF switch is pressed | 1.0 or less | BSM OFF switch
BSM OFF switch is not pressed | B+
I | Power position (IG1) | IG relay | Ignition switched ON (engine off or on) | B+ | • C/U IG1 fuse • IG relay
Ignition switched off or ACC | 1.0 or less
J | Ground | Body ground | Under any condition | 1.0 or less | Body ground

BSM control module (RH)

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Terminal | Signal name | Connected to | Measurement conditions | Voltage (V) | Inspection item(s)
--- | --- | --- | --- | --- | ---
A | Local CAN_H | BSM control module (LH) | Because this terminal is for communication, determination using terminal voltage inspection is not possible.
B | Local CAN_L | BSM control module (LH) | Because this terminal is for communication, determination using terminal voltage inspection is not possible.
C | — | — | — | — | —
D | — | — | — | — | —
E | — | — | — | — | —
F | — | — | — | — | —
G | BSM indicator light (RH) signal | BSM indicator light (RH) | Turn off BSM indicator light using BSM system active command WRN_IND_R | 0.8 or less | BSM indicator light (RH)
Turn on BSM indicator light using rear BSM system active command WRN_IND_R | B+
H | — | — | — | — | —
I | Power position (IG1) | IG relay | Ignition switched ON (engine off or on) | B+ | • C/U IG1 fuse • IG relay
Ignition switched off or ACC | 1.0 or less
J | Ground | Body ground | Under any condition | 1.0 or less | Body ground