Display Signal Circuit between Navigation ECU and Multi-display: Procedure

1. Disconnect the M6 panel connector.
   Fig 1: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the N4 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   M6-19 (VR) - N4-1 (VR)	Below 1 Ω
   M6-23 (SYNC) - N4-8 (SYNC)	Below 1 Ω
   M6-20 (R) - N4-2 (R)	Below 1 Ω
   M6-21 (G) - N4-7 (G)	Below 1 Ω
   M6-22 (B) - N4-3 (B)	Below 1 Ω
   M6-24 (VG) - N4-6 (VG)	Below 1 Ω
   M6-19 (VR) - Body ground	10 kΩ or higher
   M6-23 (SYNC) - Body ground	10 kΩ or higher
   M6-20 (R) - Body ground	10 kΩ or higher
   M6-21 (G) - Body ground	10 kΩ or higher
   M6-22 (B) - Body ground	10 kΩ or higher
   M6-24 (VG) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Remove the instrument cluster finish panel center.
   Fig 2: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the panel.

   Standard resistance

   Tester Connection	Specified Condition
   M6-19 (VR) - B-23 (VR)	Below 1 Ω
   M6-23 (SYNC) - B-27 (SYNC)	Below 1 Ω
   M6-20 (R) - B-24 (R)	Below 1 Ω
   M6-21 (G) - B-25 (G)	Below 1 Ω
   M6-22 (B) - B-26 (B)	Below 1 Ω
   M6-24 (VG) - B-28 (VG)	Below 1 Ω

NG → REPAIR OR REPLACE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY CENTER 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE