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DTC U3000:4B [BLIND SPOT MONITORING (BSM) CONTROL MODULE]

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2016 – MX-5 – i-ACTIVSENSE

DTC U3000:4B [BLIND SPOT MONITORING (BSM) CONTROL MODULE]

CAUTION:

  • When replacing a blind spot monitoring (BSM) control module (RH) having any of the following part numbers, it is necessary to replace the blind spot monitoring (BSM) control module (LH) at the same time to perform the configuration normally.

    • N243-67Y80 A

    • N243-67Y80 B

    • N243-67Y80 C

Description

Temperature temporarily increases depending on various external and environmental factors (blind spot monitoring (BSM) control module (LH) or (RH))

Detection condition

  • Blind spot monitoring (BSM) control module internal temperature of 115 °C {239 °F} or more detected for 10 s or more with the ignition switched ON (engine off or on).

Fail-safe

  • Blind spot monitoring (BSM) system is stopped.

Possible cause

  • Temporary rise in temperature due to some external environment factor

  • Blind spot monitoring (BSM) control module (RH) malfunction

  • Blind spot monitoring (BSM) control module (LH) malfunction

System wiring diagram

Not applicable

Diagnostic Procedure

Step

Inspection

Action

1

 VERIFY BLIND SPOT MONITORING (BSM) CONTROL MODULE INTERNAL TEMPERATURE

Yes

Replace the blind spot monitoring (BSM) control module in which the internal temperature increased, then go to Step 3.

(See BLIND SPOT MONITORING (BSM) CONTROL MODULE INSPECTION.)

No

Go to the next step.

2

 VERIFY IF MALFUNCTIONING LOCATION IS BLIND SPOT MONITORING (BSM) CONTROL MODULE (RH) DEPENDING ON REPEATABILITY

Yes

Replace the blind spot monitoring (BSM) control module, then go to the next step.

(See BLIND SPOT MONITORING (BSM) CONTROL MODULE INSPECTION.)

No

Go to Step 4.

3

 VERIFY THAT REPAIRS HAVE BEEN COMPLETED

Yes

Repeat the inspection from Step 1.

Go to the next step.

No

Go to the next step.

4

 VERIFY IF OTHER DTCs DISPLAYED

  • Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [BLIND SPOT MONITORING (BSM) CONTROL MODULE].)

No

DTC troubleshooting completed.

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