DTC B1051:11 [BCM]

id0902f5414800

Malfunction Location

• Windshield washer switch circuit malfunction

Detection Condition

• Short to ground detected in windshield washer switch circuit with the windshield washer switch off

Possible Causes

Vehicles With Wiper Switch On Right Side

• Short circuit to ground in wiring harness between windshield wiper and washer switch connector terminal J and BCM connector terminal 3G

• Short circuit to ground in wiring harness between auto light/wiper control module connector terminal O and BCM connector terminal 3G

• Windshield wiper and washer switch malfunction

• Auto light/wiper control module malfunction

• BCM malfunction

Vehicles With Wiper Switch On Left Side

• Short circuit to ground in wiring harness between windshield wiper and washer switch connector terminal F and BCM connector terminal 3G

• Short circuit to ground in wiring harness between auto light/wiper control module connector terminal O and BCM connector terminal 3G

• Windshield wiper and washer switch malfunction

• Auto light/wiper control module malfunction

• BCM malfunction

System Wiring Diagram

am6zzw00002038

Diagnostic Procedure

Step

Inspection

Action

1

PERFORM DTC INSPECTION

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

•  Perform the BCM DTC inspection using the M-MDS with the windshield washer switch off.
(See DTC INSPECTION [BCM].)

•  Is DTC B1051:11 displayed?

Yes

Go to the next step.

No

DTC troubleshooting completed.

2

INSPECT WINDSHIELD WIPER AND WASHER SWITCH CONNECTOR CONDITION

•  Switch the ignition to off.

•  Disconnect the negative battery cable.

•  Disconnect the windshield wiper and washer switch connector.

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

•  Is the connector normal?

Yes

Go to the next step.

No

Repair/replace the connector or terminal.

After repair procedure, go to Step 8.

3

INSPECT WINDSHIELD WIPER AND WASHER SWITCH

•  Inspect the windshield wiper and washer switch.
(See WINDSHIELD WIPER AND WASHER SWITCH INSPECTION.)

•  Is the windshield wiper and washer switch normal?

Yes

Go to the next step.

No

Replace the windshield wiper and washer switch.

(See WIPER AND WASHER SWITCH REMOVAL/INSTALLATION.)

After replacement, go to Step 8.

4

INSPECT AUTO LIGHT/WIPER CONTROL MODULE CONNECTOR CONDITION

•  Disconnect the auto light/wiper control module connector.

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

•  Is the connector normal?

Yes

Go to the next step.

No

Repair/replace the connector or terminal.

After repair procedure, go to Step 8.

5

INSPECT BCM CONNECTOR CONDITION

•  Disconnect the BCM connector.

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

•  Is the connector normal?

Yes

Go to the next step.

No

Repair/replace the connector or terminal.

After repair procedure, go to Step 8.

6

INSPECT WINDSHIELD WASHER SWITCH CIRCUIT FOR SHORT CIRCUIT TO GROUND

Vehicles with wiper switch on right side

•  Inspect for continuity between windshield wiper and washer switch connector terminal J and body ground.

•  Is there continuity?

Vehicles with wiper switch on left side

•  Inspect for continuity between windshield wiper and washer switch connector terminal F and body ground.

•  Is there continuity?

Yes

Repair/replace the wiring harness.

After repair procedure, go to Step 8.

No

Go to the next step.

7

INSPECT AUTO LIGHT/WIPER CONTROL MODULE

•  Reconnect the auto light/wiper control module connector.

•  Reconnect the negative battery cable.

•  Measure the voltage at the auto light/wiper control module connector terminal O.
(See AUTO LIGHT/WIPER CONTROL MODULE INSPECTION.)

•  Is the voltage normal?

Yes

Go to the next step.

No

Replace the auto light/wiper control module.

(See AUTO LIGHT/WIPER CONTROL MODULE REMOVAL/INSTALLATION.)

After replacement, go to the next step.

8

VERIFY DTC

•  Reconnect the disconnected connectors and the negative battery cable.

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

•  Perform the BCM DTC inspection using the M-MDS with the windshield washer switch off.
(See DTC INSPECTION [BCM].)

•  Is the same DTC 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 there other DTCs output?

Yes

Perform the corresponding DTC inspection.

No

DTC troubleshooting completed.

Step	Inspection		Action
1	PERFORM DTC INSPECTION • Clear DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Perform the BCM DTC inspection using the M-MDS with the windshield washer switch off. (See DTC INSPECTION [BCM].) • Is DTC B1051:11 displayed?	Yes	Go to the next step.
1		No	DTC troubleshooting completed.
2	INSPECT WINDSHIELD WIPER AND WASHER SWITCH CONNECTOR CONDITION • Switch the ignition to off. • Disconnect the negative battery cable. • Disconnect the windshield wiper and washer switch connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is the connector normal?	Yes	Go to the next step.
2		No	Repair/replace the connector or terminal. After repair procedure, go to Step 8.
3	INSPECT WINDSHIELD WIPER AND WASHER SWITCH • Inspect the windshield wiper and washer switch. (See WINDSHIELD WIPER AND WASHER SWITCH INSPECTION.) • Is the windshield wiper and washer switch normal?	Yes	Go to the next step.
3		No	Replace the windshield wiper and washer switch. (See WIPER AND WASHER SWITCH REMOVAL/INSTALLATION.) After replacement, go to Step 8.
4	INSPECT AUTO LIGHT/WIPER CONTROL MODULE CONNECTOR CONDITION • Disconnect the auto light/wiper control module connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is the connector normal?	Yes	Go to the next step.
4		No	Repair/replace the connector or terminal. After repair procedure, go to Step 8.
5	INSPECT BCM CONNECTOR CONDITION • Disconnect the BCM connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is the connector normal?	Yes	Go to the next step.
5		No	Repair/replace the connector or terminal. After repair procedure, go to Step 8.
6	INSPECT WINDSHIELD WASHER SWITCH CIRCUIT FOR SHORT CIRCUIT TO GROUND Vehicles with wiper switch on right side • Inspect for continuity between windshield wiper and washer switch connector terminal J and body ground. • Is there continuity? Vehicles with wiper switch on left side • Inspect for continuity between windshield wiper and washer switch connector terminal F and body ground. • Is there continuity?	Yes	Repair/replace the wiring harness. After repair procedure, go to Step 8.
6		No	Go to the next step.
7	INSPECT AUTO LIGHT/WIPER CONTROL MODULE • Reconnect the auto light/wiper control module connector. • Reconnect the negative battery cable. • Measure the voltage at the auto light/wiper control module connector terminal O. (See AUTO LIGHT/WIPER CONTROL MODULE INSPECTION.) • Is the voltage normal?	Yes	Go to the next step.
7		No	Replace the auto light/wiper control module. (See AUTO LIGHT/WIPER CONTROL MODULE REMOVAL/INSTALLATION.) After replacement, go to the next step.
8	VERIFY DTC • Reconnect the disconnected connectors and the negative battery cable. • Clear DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Perform the BCM DTC inspection using the M-MDS with the windshield washer switch off. (See DTC INSPECTION [BCM].) • Is the same DTC 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 there other DTCs output?	Yes	Perform the corresponding DTC inspection.
9		No	DTC troubleshooting completed.