DTC B10AD:87 [BCM]

id0902f5951500

Description

• Communication error between rain sensor and BCM

Detection Condition

• BCM detects the communication missing with the rain sensor continuously for 10 times.

Possible Causes

• Rain sensor connector or terminals malfunction

• BCM connector or terminals malfunction

• Short to ground in wiring harness between rain sensor terminal C and BCM terminal 7H

• Short to power supply in wiring harness between rain sensor terminal C and BCM terminal 7H

• Open circuit in wiring harness between rain sensor terminal C and BCM terminal 7H

• Rain sensor malfunction

• BCM malfunction

System Wiring Diagram

am6zzw00006964

Diagnostic Procedure

Step

Inspection

Action

1

PERFORM DTC INSPECTION

•  Clear the DTCs using the M-MDS.
(See CLEARING DTC [BCM].)

•  Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)

•  Is the DTC B10AD:87 present?

Yes

Go to the next step.

No

DTC troubleshooting completed.

2

INSPECT RAIN SENSOR CONNECTOR CONDITION

•  Switch the ignition to off.

•  Disconnect the negative battery cable.

•  Disconnect the rain sensor connector.

•  Inspect the connector and terminals (corrosion, damage, pin disconnection).

•  Is there any malfunction?

Yes

Repair or replace the connector or terminals, then go to Step 8.

No

Go to the next step.

3

INSPECT BCM CONNECTOR CONDITION

•  Disconnect the BCM connector.

•  Inspect the connector and terminals (corrosion, damage, pin disconnection).

•  Is there any malfunction?

Yes

Repair or replace the connector or terminals, then go to Step 8.

No

Go to the next step.

4

INSPECT RAIN SENSOR CIRCUIT FOR SHORT TO GROUND

•  Rain sensor and BCM connectors are disconnected.

•  Inspect for continuity between rain sensor terminal C (wiring harness-side) and body ground.

•  Is there continuity?

Yes

Repair or replace the wiring harness for a possible short to ground, then go to Step 8.

No

Go to the next step.

5

INSPECT RAIN SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY

•  Rain sensor and BCM connectors are disconnected.

•  Reconnect the negative battery cable.

•  Switch the ignition to ON.

•  Measure the voltage at the rain sensor terminal C (wiring harness-side).

•  Can the voltage be measured?

Yes

Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.

No

Go to the next step.

6

INSPECT RAIN SENSOR CIRCUIT FOR OPEN CIRCUIT

•  Rain sensor and BCM connectors are disconnected.

•  Switch the ignition to off.

•  Disconnect the negative battery cable.

•  Inspect for continuity between rain sensor terminal C (wiring harness-side) and BCM terminal 7H (wiring harness-side).

•  Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness for a possible open circuit, then go to Step 8.

7

VERIFY RAIN SENSOR MALFUNCTION

•  Make sure to reconnect all disconnected connectors.

•  Reconnect the negative battery cable.

•  Clear the DTCs using the M-MDS.
(See CLEARING DTC [BCM].)

•  Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)

•  Is the DTC B10AD:87 present?

Yes

Replace the rain sensor, then go to the next step.

(See RAIN SENSOR REMOVAL/INSTALLATION.)

No

Go to Step 9.

8

VERIFY TROUBLESHOOTING COMPLETED

•  Make sure to reconnect all disconnected connectors.

•  Reconnect the negative battery cable.

•  Clear the DTCs using the M-MDS.
(See CLEARING DTC [BCM].)

•  Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)

•  Is the DTC B10AD:87 present?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the BCM.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

9

VERIFY THAT NO OTHER DTCs ARE PRESENT

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [BCM].)

No

DTC troubleshooting completed.

Step	Inspection		Action
1	PERFORM DTC INSPECTION • Clear the DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Perform the BCM DTC inspection using the M-MDS. (See DTC INSPECTION [BCM].) • Is the DTC B10AD:87 present?	Yes	Go to the next step.
1		No	DTC troubleshooting completed.
2	INSPECT RAIN SENSOR CONNECTOR CONDITION • Switch the ignition to off. • Disconnect the negative battery cable. • Disconnect the rain sensor connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 8.
2		No	Go to the next step.
3	INSPECT BCM CONNECTOR CONDITION • Disconnect the BCM connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 8.
3		No	Go to the next step.
4	INSPECT RAIN SENSOR CIRCUIT FOR SHORT TO GROUND • Rain sensor and BCM connectors are disconnected. • Inspect for continuity between rain sensor terminal C (wiring harness-side) and body ground. • Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 8.
4		No	Go to the next step.
5	INSPECT RAIN SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY • Rain sensor and BCM connectors are disconnected. • Reconnect the negative battery cable. • Switch the ignition to ON. • Measure the voltage at the rain sensor terminal C (wiring harness-side). • Can the voltage be measured?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
5		No	Go to the next step.
6	INSPECT RAIN SENSOR CIRCUIT FOR OPEN CIRCUIT • Rain sensor and BCM connectors are disconnected. • Switch the ignition to off. • Disconnect the negative battery cable. • Inspect for continuity between rain sensor terminal C (wiring harness-side) and BCM terminal 7H (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
7	VERIFY RAIN SENSOR MALFUNCTION • Make sure to reconnect all disconnected connectors. • Reconnect the negative battery cable. • Clear the DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Perform the BCM DTC inspection using the M-MDS. (See DTC INSPECTION [BCM].) • Is the DTC B10AD:87 present?	Yes	Replace the rain sensor, then go to the next step. (See RAIN SENSOR REMOVAL/INSTALLATION.)
7		No	Go to Step 9.
8	VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Reconnect the negative battery cable. • Clear the DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Perform the BCM DTC inspection using the M-MDS. (See DTC INSPECTION [BCM].) • Is the DTC B10AD:87 present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.) Go to the next step.
8		No	Go to the next step.
9	VERIFY THAT NO OTHER DTCs ARE PRESENT • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [BCM].)
9		No	DTC troubleshooting completed.