Lexus ES: IG Power Source Circuit
DESCRIPTION
When the engine switch is turned on (IG), the IG power source circuit supplies positive (+) voltage to the multiplex tilt and telescopic ECU.
WIRING DIAGRAM
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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 - BATTERY) |
| (a) Disconnect the G63 multiplex tilt and telescopic ECU connector. |
|
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(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G63-10 (IG) - Body ground | Engine 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 G63 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 |
|---|---|---|
| G63-1 (GND) - Body ground | Always | Below 1 Ω |
| G63-8 (GND2) - Body ground | Always | Below 1 Ω |
| OK | | REPLACE MULTIPLEX TILT AND TELESCOPIC ECU |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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