Inspection Procedure

WARNING: This page is about a different car, the 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

Check RSE ECU.
PREPARATION:

Disconnect the RSE ECU.

CHECK:

Check the voltage of terminal +B.

OK:
1. +B: 10 - 14 V
CHECK:

Check the voltage of terminal ACC when the ignition switch is in ACC or ON position.

OK:
1. ACC: 10 - 14 V
CHECK:

Check continuity at terminal GND.

OK:
1. GND: Continuity
1. NG : Replace or repair harness and connector.
2. OK : Go To Next Step.
Check wire harness between rear display and RSE ECU.
PREPARATION:

Disconnect the connector rear display and RSE ECU.

CHECK:

Check continuity of wire harness.

Fig 1: Wire Harness Continuity Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK:
1. Continuity
1. NG : Repair or replace harness and connector.
2. OK : Go To Next Step.
Check rear display.
PREPARATION:

Disconnect the rear display.

CHECK:

Check the voltage of terminal BU+B.

OK:
1. +B: 10 - 14 V
CHECK:

Check the voltage of terminal ACC when the ignition switch is in ACC or ON position.

OK:
1. ACC: 10 - 14 V
CHECK:

Check continuity at terminal GND.

OK:
1. GND: Continuity
1. NG : Replace or repair harness and connector.
2. OK : Go To Next Step.
Check RSE ECU.
CHECK:

Check the malfunction disappears when a good RSE ECU in quality is installed.

OK:
1. Malfunction disappear
1. OK : Replace RSE ECU.
2. NG : Repair or replace rear display.