NO.1 BSM OFF INDICATOR LIGHT DOES NOT ILLUMINATE WHEN IGNITION SWITCH IS TURNED TO ON POSITION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE]

id0903n1990300

1
BSM OFF indicator light does not illuminate when ignition switch is turned to ON position
DESCRIPTION
•  BSM OFF indicator light does not illuminate when ignition switch is turned to ON position.
•  The BSM control module does not communicate with the M-MDS.
Possible Causes
•  BSM control module (RH) does not initiate
―  Open or short circuit in BSM control module (RH) power supply circuit (open or short to ground circuit in wiring harness between ignition switch and BSM control module (RH) terminal B)
―  Open circuit in BSM control module (RH) ground circuit (open circuit in wiring harness between BSM control module (RH) and ground, poor contact at ground point)
―  BSM control module (RH) malfunction
•  Instrument cluster does not illuminate BSM OFF indicator light
―  Communication error between BSM control module (RH) and instrument cluster

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY DTCs
•  Retrieve DTCs from the BSM control module (RH) and instrument cluster using the M-MDS.
•  Are any DTCs displayed?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [INSTRUMENT CLUSTER].)
(See DTC TABLE [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE].)
No
Go to the next step.
If there is a communication malfunction between the M-MDS and the BSM control module, go to Step 3.
2
INSPECT IF MALFUNCTION IS IN INSTRUMENT CLUSTER OR BSM CONTROL MODULE (RH)
•  Turn on the BSM OFF indicator light using check code 26 of the instrument cluster input/output check mode function.
•  Does the BSM OFF indicator light illuminate?
Yes
Replace the BSM control module (RH).
(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE].)
No
Replace the instrument cluster
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
3*
INSPECT BSM CONTROL MODULE (RH) POWER SUPPLY VOLTAGE
•  Turn the ignition switch to the ON position.
•  Measure the voltage at BSM control module (RH) terminal B.
•  Is the voltage B+?
Yes
Go to the next step.
No
Inspect and repair for the following:
•  Inspect the condition of fuses between the ignition switch and the BSM control module (RH), and perform repairs at the location where the fuse burned out.
•  Inspect for an open circuit in the wiring harness between the ignition switch and the BSM control module (RH).
4*
INSPECT BSM CONTROL MODULE (RH) GROUND CIRCUIT
•  Turn the ignition switch to the OFF position.
•  Verify that there is continuity between the BSM control module (RH) terminal and ground.
•  Is there continuity?
Yes
Replace the BSM control module (RH).
(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE].)
No
Inspect and repair the ground point.
Repair or replace for an open circuit between the BSM control module (RH) and ground.