Inspection Procedure

Check battery positive voltage.
OK: Voltage: 10 - 14 V

NG: Check charging system.

OK: Go to next step.
Inspect SMT-B fuse.
PREPARATION:

Remove SMT-B fuse from the FL Block and J/B No. 1.

CHECK:

Check continuity of SMT-B fuse.

Fig 1: Identifying SMT-B Fuse
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Continuity

NG: Check for short in wire harness related to SMT-B fuse (see HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).

OK: Go to next step.
Check wire harness and connectors between transmission control ECU and battery (see HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
NG: Repair or replace wire harness and connector.

OK: Replace transmission control ECU (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).