Lexus NX manuals

Lexus NX: Relay

Lexus NX Service Manual / Vehicle Interior / Heating / Air Conditioning / Relay

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT PTC HEATER RELAY(PTC HTR NO. 1, NO. 3)

(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 is not applied between terminals 1 and 2

10 kΩ or higher

3 - 5

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω
  • If the result is not as specified, replace the PTC heater relay (PTC HTR NO. 1, NO. 3).

*a

Component without harness connected

(PTC Heater Relay)

2. INSPECT PTC HEATER RELAY(PTC HTR NO. 2)

(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 is not applied between terminals 1 and 2

10 kΩ or higher

3 - 5

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω
  • If the result is not as specified, replace the PTC heater relay (PTC HTR NO. 2).

*a

Component without harness connected

(PTC Heater Relay)

3. INSPECT WATER PUMP 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 is not applied between terminals 1 and 2

10 kΩ or higher

3 - 5

Auxiliary battery voltage is applied between terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the water pump relay.

*a

Component without harness connected

(Water Pump Relay)

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REMOVAL PROCEDURE 1. REMOVE DOOR SCUFF PLATE ASSEMBLY LH Click here 2. REMOVE COWL SIDE TRIM BOARD LH Click here 3. REMOVE CONSOLE ARMREST ASSEMBLY Click here 4. REMOVE UPPER REAR CONSOL

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