Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000001B6X005X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: WIPER AND WASHER: WIPER SWITCH: INSPECTION; 2007 MY LX470 [08/2006 -        ]

INSPECTION

1. INSPECT WIPER AND WASHER SWITCH ASSEMBLY

(a) Measure the resistance of the switch.

Standard resistance:

Tester Connection

Switch Condition

Specified Condition

7 - 16

OFF

Below 1 Ω

INT

7 - 17

LO

8 - 17

HI

2 - 11

Washer ON

-

Washer OFF

10 kΩ or higher

If the result is not as specified, replace the switch.

2. INSPECT FRONT WIPER SWITCH ASSEMBLY

(a) Turn the wiper switch to INF position.

(b) Turn the intermittent time control switch to the FAST position.

(c) Connect the positive (+) lead from the battery to terminal 16 and the negative (-) lead to terminal 2.

(d) Connect the positive (+) lead from the voltmeter to terminal 7 and the negative (-) lead to terminal 2, and check that the meter needle indicates battery voltage.

(e) After connecting terminal 16 to terminal 17, connect to terminal 2 to terminal 17,

(f) Check that the voltage rises from 0 volts to the voltage shown in the table.

INT time control switch position

Voltage

FAST

Waveform 1

SLOW

Waveform 2

If operation is not as specified, replace the wiper and washer switch.

3. INSPECT REAR WIPER AND WASHER SWITCH ASSEMBLY

(a) Measure the resistance of the switch.

Standard resistance:

Tester Connection

Switch Condition

Specified Condition

2 - 12

Washer 1

Below 1 Ω

2 - 13

INT

2 - 10

ON

Washer 2

2 - 12

-

OFF

10 kΩ or higher

If the result is not as specified, replace the switch.