Lexus ES: Terminals Of Ecu
TERMINALS OF ECU
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
.png)
| *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) | Power switch on (IG) | 11 to 14 V |
| G39-2 (IG+) - G39-4 (GND) | R - W-B | Power source (IG) | Power switch off | Below 1 V |
| G39-1 (B) - G39-4 (GND) | B - W-B | Auxiliary battery power supply | Power switch off | 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 | Power switch on (IG), Front wiper deicer switch off | 11 to 14 V |
| G39-17 (FDEF) - G39-4 (GND) | GR - W-B | Wiper Deicer signal | Power switch on (IG), Front wiper deicer switch on | Below 2.2 V |
READ NEXT:
Diagnosis System
DIAGNOSIS SYSTEM CHECK DLC3 (a) Check the DLC3. Click here INSPECT AUXILIARY BATTERY VOLTAGE (a) Measure the auxiliary battery voltage with the power switch off. Standard Voltage: 11 to 14 V If the
Data List / Active Test
DATA LIST / ACTIVE TEST ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive func
Windshield Deicer does not Operate
DESCRIPTION When the front wiper deicer switch is operated, the operation signal is transmitted to the air conditioning amplifier assembly directly. When the air conditioning amplifier assembly receiv
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY (a) Using a vernier caliper, measure the length of the exposed brushes. Standard Exposed Brush Length: 9.5 to 11.5 mm (0.374 to 0.453 in.) Minimum Exposed Brush Length: 4.5 mm (0.177 in.) If the brush length is less than the minimu
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT PCV VALVE (VENTILATION VALVE SUB-ASSEMBLY) CAUTION: To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fans when working in the engine compartment with the engine running or the power switch on
