Overhead Junction Block: Inspection

WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT OVERHEAD JUNCTION BLOCK ASSEMBLY
Disconnect the connector from the overhead J/B and inspect the connector on the wire harness side, as shown.

Fig 1: Overhead Junction Block Assembly Inspection Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Identifying Overhead Junction Block Assembly Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the overhead junction block.
Overhead J/B side: INSPECT OVERHEAD JUNCTION BLOCK ASSEMBLY

Fig 3: Overhead Junction Block Assembly Inspection Reference Chart (Overhead J/B Side)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Identifying Overhead Junction Block Assembly Connector Terminals (Overhead J/B Side)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If continuity is not as specified, replace the overhead J/B assembly.