Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Tundra and 2005 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

Check taillights operation.
CHECK:

Check that the taillights light up when the light control switch is turned to TAIL.
1. NG : Check HEADLIGHT AND TAILLIGHT SYSTEM .
2. OK : Go to next step.
Check harness and connector between TVIP ECU and integration relay (driver side J/B).
PREPARATION:
1. Disconnect the T11 TVIP ECU connector.
2. Disconnect the 1N or 1L driver side J/B connector.
CHECK:

Check the continuity between the wire harness side connectors.

Fig 1: Checking Harness And Connector TVIP ECU And Integration Relay (Driver Side J/B)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK:

Fig 2: TVIP ECU And Integration Relay (Driver Side J/B) (W/ Daytime Running Light)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: TVIP ECU And Integration Relay (Driver Side J/B) (W/O Daytime Running Light)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG : Repair or replace harness and connector.
2. OK : Go to next step.
Replace TVIP ECU with normal one.
1. NG : Replace driver side J/B.
2. OK : Replace TVIP ECU.