Washer Motor Circuit

WIPER / WASHER: WIPER AND WASHER SYSTEM: Washer Motor Circuit

Washer Motor Circuit

DESCRIPTION

- The main body ECU controls the rear washer motor.
- Perform this inspection with the back door window glass fully closed.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (REAR WIPER WASHER)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) According to the display on the Techstream, perform the Active Test.

Main Body

OK:
Rear washer motor operates.
NG -- INSPECT FUSE (WSH)
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT FUSE (WSH)

(a) Remove the WSH fuse from the main body ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

(c) Reinstall the WSH fuse.
NG -- REPLACE FUSE
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (BATTERY - REAR WASHER MOTOR)

(a) Disconnect the A42 rear washer motor and pump assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:

(c) Reconnect the rear washer motor and pump assembly connector.
NG -- INSPECT RR WSH RELAY
OK -- Continue to next step.
4. INSPECT REAR WASHER MOTOR AND PUMP ASSEMBLY
(a) Remove the rear washer motor and pump assembly.

(b) Connect the battery positive (+) lead to terminal 1 and the negative (-) lead to terminal 2.
(c) Check that the rear washer motor operates.
OK:
Rear washer motor operates.
(d) Reinstall the rear washer motor and pump assembly.
NG -- REPLACE REAR WASHER MOTOR AND PUMP ASSEMBLY
OK -- REPAIR OR REPLACE HARNESS AND CONNECTOR (REAR WASHER MOTOR - BODY GROUND)
5. INSPECT RR WSH RELAY

(a) Remove the RR WSH relay from the engine room relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

(c) Reinstall the RR WSH relay.
NG -- REPLACE RR WSH RELAY
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (RR WSH RELAY - BATTERY)

(a) Remove the RR WSH relay from the engine room relay block.
(b) Disconnect the DB main body ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

(d) Reinstall the RR WSH relay.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (RR WSH RELAY - REAR WASHER MOTOR)

(a) Remove the RR WSH relay from the engine room relay block.
(b) Disconnect the A42 rear washer motor and pump assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

(d) Reinstall the RR WSH relay.
(e) Reconnect the rear washer motor and pump assembly connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (RR WSH RELAY - MAIN BODY ECU)

(a) Remove the RR WSH relay from the engine room relay block.
(b) Disconnect the H2 main body ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

(d) Reinstall the RR WSH relay.
(e) Reconnect the main body ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
9. CHECK HARNESS AND CONNECTOR (REAR WASHER MOTOR - BODY GROUND)

(a) Disconnect the A42 rear washer motor and pump assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

(c) Reconnect the rear washer motor and pump assembly connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
10. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU)

(a) Disconnect the DA main body ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:

(c) Reconnect the main body ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
11. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - IGNITION SWITCH, BODY GROUND)

(a) Disconnect the DD main body ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:

(d) Reconnect the main body ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU