Lexus NX: Terminals Of Ecu
TERMINALS OF ECU
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
(a) Disconnect the I50 air conditioning amplifier assembly connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
| Tester Connection | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| I50-1 (IG+) - Body ground | SB - Body ground | Power source (IG) | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| I50-21 (B) - Body ground | GR - Body ground | Auxiliary battery power supply | Power switch off | 11 to 14 V |
| I50-14 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the I50 air conditioning amplifier assembly connector.
(d) Measure the voltage according to the value(s) in the table below.
| Tester Connection | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| I50-39 (FDEF) - Body ground | L - Body ground | Wiper Deicer signal | Power switch on (IG), windshield deicer switch off | 11 to 14 V |
| Power switch on (IG), windshield deicer switch on | Below 2.2 V |
READ NEXT:
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 windshield deicer switch is operated, the operation signal is transmitted to the radio receiver assembly. The radio receiver assembly transmits the operation signal to the air con
SEE MORE:
Ignition Hold Monitor Malfunction (B2271)
DESCRIPTION This DTC is stored when a malfunction in the IG circuit and IG hold circuit in the certification ECU (smart key ECU assembly) is detected. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2271 Ignition Hold Monitor Malfunction When either of the follow
Power Window Switch Malfunction (B2312)
DESCRIPTION The power window regulator motor assemblies are operated by the multiplex network master switch assembly, power window regulator switch assembly or rear power window regulator switch assemblies. The power window regulator motor assemblies have motor, regulator and ECU functions. This DTC
