Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
| *A | w/o Seat Heater | *B | w/ Seat Heater |
(a) Disconnect the G39 air conditioning amplifier assembly connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| G39-2 (IG+) - G39-4 (GND) | R - W-B | Power source (IG) | Engine switch on (IG) | 11 to 14 V |
| G39-2 (IG+) - G39-4 (GND) | R - W-B | Power source (IG) | Engine switch off | Below 1 V |
| G39-1 (B) - G39-4 (GND) | B - W-B | Battery power supply | Always | 11 to 14 V |
| G39-4 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the G39 air conditioning amplifier assembly connector.
(d) Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| G39-17 (FDEF) - G39-4 (GND) | GR - W-B | Wiper Deicer signal | Engine switch on (IG), Front wiper deicer switch off | 11 to 14 V |
| G39-17 (FDEF) - G39-4 (GND) | GR - W-B | Wiper Deicer signal | Engine switch on (IG), Front wiper deicer switch on | Below 2.2 V |
READ NEXT:
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Disassembly
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Removal
REMOVAL CAUTION / NOTICE / HINT HINT: for Side:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. REMOVE FRONT DOOR SCUFF PLATE (for Side) Click here 2. REMOVE COWL SIDE TRIM BOARD (for Side) Click here 3. REMOVE FRONT DOOR OPENI
