Lexus NX: IG Power Source Circuit
DESCRIPTION
When the power switch is turned on (IG), the IG power source circuit supplies positive (+) voltage to the multiplex tilt and telescopic ECU.
The multiplex tilt and telescopic ECU also receives power switch signals via this circuit.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - AUXILIARY BATTERY) |
| (a) Disconnect the I60 multiplex tilt and telescopic ECU connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I60-10 (IG) - Body ground | Power switch on (IG) | 11 to 14 V |
| NG | .gif) | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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| 2. | CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND) |
| (a) Disconnect the I60 multiplex tilt and telescopic ECU connector. |
|
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(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I60-1 (GND) - Body ground | Always | Below 1 Ω |
| I60-8 (GND2) - Body ground | Always | Below 1 Ω |
| OK | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Components
COMPONENTS ILLUSTRATION *1 COLUMN HOLE COVER SILENCER SHEET *2 COMBINATION SWITCH ASSEMBLY WITH SPIRAL CABLE SUB-ASSEMBLY *3 ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY *4 LOWER ST
Removal
REMOVAL CAUTION / NOTICE / HINT NOTICE:
Do not replace the spiral with sensor cable sub-assembly with the battery connected and the engine switch on (IG).
Do not rotate the spiral with sensor cab
SEE MORE:
Reassembly
REASSEMBLY CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. PROCEDURE 1. INSTALL REAR SEAT WIRE LH (for LH Side) (a) Attach the 2 clamps to install the rear seat wire LH. (b) Connect the 2 connectors. 2. INSTALL FOLD SEAT CONTROL
Vehicle Control History
VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY (DYNAMIC RADAR CRUISE CONTROL SYSTEM) (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (
