Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MULTI-DISPLAY (MACC VOLTAGE)

Measure the voltage of the display.

Standard voltage

VOLTAGE CHART

Tester Connection	Condition	Specified Condition
M14-4 (MACC) - Body ground	Power switch ON (ACC)	4 to 6 V

NG: REPLACE MULTI-DISPLAY

Fig 1: Checking Multi-Display (MACC Voltage)

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OK: Go to Next Step

CHECK WIRE HARNESS (MULTI-DISPLAY - OVERHEAD JUNCTION BLOCK)

Disconnect the M14 display connector.
Disconnect the 03 junction block connector.

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE REFERENCE CHART

Tester Connection	Specified Condition
M14-4 (MACC) - 03-7 (ACC)	Below 1 Ω
M14-2 (MIN+) - 03-8 (MI1+)	Below 1 Ω
M14-3 (MIN-) - 03-9 (MIC-)	Below 1 Ω
M14-4 (MACC) - Body ground	10 kΩ or higher
M14-2 (MIN+) - Body ground	10 kΩ or higher
M14-3 (MIN-) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 2: Checking Wire Harness (Multi-Display - Overhead Junction Block)

OK: PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE