Last Modified: 4-30-2014 6.6 J Doc ID: RM0000017CE003X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM: Display Signal Circuit between Television Camera ECU and Multi-display; 2006 MY LX470 [05/2005 -        ]

Display Signal Circuit between Television Camera ECU and Multi-display

DESCRIPTION

  • This is the display signal circuit from the multi-display controller sub-assembly to the multi-display assembly.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK WIRE HARNESS (NAVIGATION ECU - TELEVISION CAMERA ECU)

(a) Disconnect the N3 and T31 ECU connectors.

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

Standard resistance:

Tester Connection

Specified Condition

N3-2 (R) -T31-15 (R1)

Below 1 Ω

N3-7 (G) - T31-14(G1)

Below 1 Ω

N3-3 (B) -T31-13 (B1)

Below 1 Ω

N3-8 (SYNC) - T31-34 (SYN1)

Below 1 Ω

N3-1 (VR) - T31-33 (VR1)

Below 1 Ω

N3-6 (VG) -T31-16 (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

2.

CHECK WIRE HARNESS (TELEVISION CAMERA ECU - MULTI-DISPLAY)

(a) Disconnect the T31 ECU connector.

(b) Disconnect the M6 display connector.

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

Standard resistance:

Tester Connection

Specified Condition

T31-10 (R) - M6-24 (R)

Below 1 Ω

T31-11 (G) - M6-25 (G)

Below 1 Ω

T31-12 (B) - M6-26 (B)

Below 1 Ω

T31-31 (SYNC) - M6-27 (SYNC)

Below 1 Ω

T31-32 (VR) - M6-23 (VR)

Below 1 Ω

T31-9 (VG) - M6-28 (VG)

Below 1 Ω

T31-10 (R) - Body ground

10 kΩ or higher

T31-11 (G) - Body ground

10 kΩ or higher

T31-12 (B) - Body ground

10 kΩ or higher

T31-31 (SYNC) - Body ground

10 kΩ or higher

T31-32 (VR) - Body ground

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

3.

CHECK WIRE HARNESS (TELEVISION CAMERA ECU - TELEVISION CAMERA)

(a) Disconnect the T31 ECU connector.

(b) Disconnect the T30 camera connector.

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

Standard resistance:

Tester Connection

Specified Condition

T31-20 (CB+) - T30-4 (CB+)

Below 1 Ω

T31-19 (CGND) - T30-3 (CGND)

Below 1 Ω

T31-40 (CV+) - T30-2 (CV+)

Below 1 Ω

T31-39 (CV-) - T30-1 (CV-)

Below 1 Ω

T31-20 (CB+) - Body ground

10 kΩ or higher

T31-19 (CGND) - Body ground

10 kΩ or higher

T31-40 (CV+) - Body ground

10 kΩ or higher

T31-39 (CV-) - Body ground

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

4.

INSPECT TELEVISION CAMERA ECU

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

Standard:

Tester Connection

Condition

Specified Condition

T30-4 (CB+) - T30-3 (CGND)

Ignition switch ON, shift lever R position

Approx. 6 V

NG

REPLACE TELEVISION CAMERA ECU

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE