DTC B10AD:86 [BCM]

2016 – MX-5 – Body and Accessories

Description	Auto wiper control request signal error
Detection condition	BCM receives the error signals from the auto light sensor/rain sensor for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe	Auto wiper system Continue the controls prior to the wiper malfunction detection.
Possible cause	Auto light sensor/rain sensor malfunction BCM malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY IF MALFUNCTIONING LOCATION IS AUTO LIGHT SENSOR/RAIN SENSOR DEPENDING ON REPEATABILITY Clear the DTC for the BCM using the M-MDS. (See CLEARING DTC [BCM].) Operate the wiper and washer switch to the AUTO position. Switch the ignition ON (engine off or on) and wait for 5 s or more. Retrieve the BCM DTCs using the M-MDS. (See DTC INSPECTION [BCM].) Is the same DTC displayed?	Yes	Replace the auto light sensor/rain sensor, then go to the next step. (See RAIN SENSOR REMOVAL/INSTALLATION.)
		No	Go to Step 3.
2	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Clear the DTC for the BCM using the M-MDS. (See CLEARING DTC [BCM].) Operate the wiper and washer switch to the AUTO position. Switch the ignition ON (engine off or on) and wait for 5 s or more. Retrieve the BCM DTCs using the M-MDS. (See DTC INSPECTION [BCM].) Is the same DTC displayed?	Yes	Replace the BCM, then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)
		No	Go to the next step.
3	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 [BCM].)
		No	DTC troubleshooting completed.