Multi-display Power Source Circuit: Wiring Diagram

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Multi-Display Power Source Circuit - Wiring Diagram

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INSPECT MULTI-DISPLAY

Disconnect the multi-display connectors M4 and M5.

Measure the resistance according to the value(s) in the table below.

Resistance

CONNECTOR TERMINAL RESISTANCE SPECIFICATION

Tester connection	Condition	Specified condition
GND (M5-3) - Body ground	Always	Below 1 Ω
GND (M4-3) - Body ground	Always	Below 1 Ω

Measure the voltage according to the value(s) in the table below.

Voltage

ECU CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Tester connection	Condition	Specified condition
+B1 - GND	Always	10 to 14 V
ACC - GND	Ignition SW ACC	10 to 14 V
IG - GND	Ignition SW ON	10 to 14 V

Fig 2: Identifying Multi-Display Connectors M4 And M5

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL