Inspection Procedure
WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK WIRE HARNESS (NAVIGATION ECU - TELEVISION CAMERA ECU)
- Disconnect the N3 and T21 ECU connectors.
- Measure the resistance of the wire harness side connectors.
Standard resistance
NAVIGATION ECU - TELEVISION CAMERA ECUTester Connection Specified Condition N3-2 (R) - T21-15 (R1) Below 1 Ω N3-7 (G) - T21-14 (G1) Below 1 Ω N3-3 (B) - T21-13 (B1) Below 1 Ω N3-8 (SYNC) - T21-34 (SYN1) Below 1 Ω N3-1 (VR) - T21-33 (VR1) Below 1 Ω N3-6 (VG) - T21-16 (VG1) Below 1 Ω N3-2 (R) - Body ground 10 kΩ or higher N3-7 (G) - Body ground 10 kΩ or higher N3-3 (B) - Body ground 10 kΩ or higher N3-8 (SYNC) - Body ground 10 kΩ or higher N3-1 (VR) - Body ground 10 kΩ or higher
- NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
- OK: GO TO NEXT STEP
- CHECK WIRE HARNESS (TELEVISION CAMERA ECU - MULTI-DISPLAY)
- Disconnect the T21 ECU connector.
- Disconnect the M6 display connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
TELEVISION CAMERA ECU - MULTI-DISPLAYTester Connection Specified Condition T21-10 (R) - M6-24 (R) Below 1 Ω T21-11 (G) - M6-25 (G) Below 1 Ω T21-12 (B) - M6-26 (B) Below 1 Ω T21-31 (SYNC) - M6-27 (SYNC) Below 1 Ω T21-32 (VR) - M6-23 (VR) Below 1 Ω T21-9 (VG) - M6-28 (VG) Below 1 Ω T21-10 (R) - Body ground 10 kΩ or higher T21-11 (G) - Body ground 10 kΩ or higher T21-12 (B) - Body ground 10 kΩ or higher T21-31 (SYNC) - Body ground 10 kΩ or higher T21-32 (VR) - Body ground 10 kΩ or higher
- NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
- OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE