Lexus ES manuals

Lexus ES: Relay

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT DEF RELAY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 4

Auxiliary battery voltage applied between terminals 1 and 2

10 kΩ or higher

3 - 4

Auxiliary battery voltage not applied between terminals

Below 1 Ω

3 - 5

Auxiliary battery voltage applied between terminals 1 and 2

Below 1 Ω

3 - 5

Auxiliary battery voltage not applied between terminals

10 kΩ or higher

4 - 5

Always

10 kΩ or higher

If the result is not as specified, replace the DEF relay.

2. INSPECT DEICER RELAY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Auxiliary battery voltage applied between terminals 1 and 2

Below 1 Ω

3 - 5

Auxiliary battery voltage not applied between terminals

10 kΩ or higher

If the result is not as specified, replace the deicer relay.

3. INSPECT HWD RELAY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Auxiliary battery voltage applied between terminals 1 and 2

Below 1 Ω

3 - 5

Auxiliary battery voltage not applied between terminals

10 kΩ or higher

If the result is not as specified, replace the HWD relay.

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