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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PROBLEM SYMPTOMS TABLE HINT:
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
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