Last Modified: 4-30-2014 6.6 G Doc ID: RM000001FBD000X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: WIPER AND WASHER: WIPER AND WASHER SYSTEM: ON-VEHICLE INSPECTION; 2006 MY LX470 [05/2005 -        ]

ON-VEHICLE INSPECTION

1. CHECK HEADLIGHT CLEANER SWITCH CIRCUIT

(a) Disconnect the switch connector and inspect the connector on the wire harness side, as shown.

Standard voltage:

Tester Connection

Specified Condition

2 - Body ground

Battery positive voltage

If the circuit is not as specified, inspect the circuits connected to other parts.

2. CHECK HEADLIGHT CLEANER RELAY CIRCUIT

(a) Disconnect the connector from the relay and inspect the connector on the wire harness side, as shown.

Standard voltage:

Tester Connection

Condition

Specified Condition

1 - Body ground

Ignition switch ON

Battery positive voltage

Ignition switch OFF or ACC

No voltage

5 - Body ground

Always

Battery positive voltage

OK:

Tester Connection

Specified Condition

2 - Body ground

Continuity

3 - Body ground

If the circuit is not as specified, inspect the circuits connected to other parts.

3. CHECK HEADLIGHT CLEANER RELAY OPERATION

(a) Check that no continuity exists between terminal 2 and 5.

(b) Connect the battery positive (+) lead to terminals 1 and 5, and the battery negative (-) lead to terminal 3.

(c) Connect the battery negative (-) lead to terminal 4, and check that continuity exists between terminal 2 and 5 for 0.9 to 1.1 seconds, then no continuity exists.

If the operation is not as specified, replace the motor.

4. CHECK HEADLIGHT CLEANER MOTOR CIRCUIT

(a) Disconnect the connector from the cleaner motor and inspect the connector on the wire harness side, as shown.

OK:

Tester Connection

Specified Condition

2 - Body ground

Continuity

If the circuit is not as specified, inspect the circuits connected to other parts.