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 WIRE HARNESS (MULTI-DISPLAY - NAVIGATION ECU)

Disconnect the M14 display connector.
Disconnect the N3 ECU connector.

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE REFERENCE CHART

Tester Connection	Specified Condition
N3-8 (VOI-) - M14-6 (IVI-)	Below 1 Ω
N3-9 (VOI+) - M14-5 (IVI+)	Below 1 Ω
N3-8 (VOI-) - Body ground	10 kΩ or higher
N3-9 (VOI+) - Body ground	10 kΩ or higher

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

Fig 1: Checking Wire Harness (Multi-Display - Navigation ECU)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step

CHECK WIRE HARNESS (MULTI-DISPLAY - STEREO COMPONENT AMPLIFIER)

Disconnect the M14 display connector.
Disconnect the S15 amplifier connector.

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE REFERENCE CHART

Tester Connection	Specified Condition
M14-25 (IVO+) - S15-23 (INT+)	Below 1 Ω
M14-26 (IVO-) - S15-22 (INT-)	Below 1 Ω
M14-25 (IVO+) - Body ground	10 kΩ or higher
M14-26 (IVO-) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 2: Checking Wire Harness (Multi-Display - Stereo Component Amplifier)

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