Inspection Procedure

Check ECU-B2 fuse.
1. NG: Check for short in all the harness and components connected to the ECU- B2 fuse, and repair them.
2. OK: Go to Next Step
Check continuity between terminal SGND of Power Seat Control ECU connector and body ground.
CHECK:

Measure resistance between terminal SGND of Power Seat Control ECU connector and body ground.

OK:
1. Resistance: Continuity (below 1 Ω)
Fig 1: Checking Continuity Between Terminal SGND Of Power Seat Control ECU Connector And Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Repair or replace harness or connector.
2. OK: Go to Next Step
Check voltage between terminal SYSB of Power Seat Control ECU connector and body ground.
CHECK:

Measure voltage between terminal SYSB of Power Seat Control ECU connector and body ground.

OK:
1. Voltage: 10 - 14 V
Fig 2: Checking Voltage Between Terminal SYSB Of Power Seat Control ECU Connector And Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Proceed to next circuit inspection shown on problem symptom table (See PROBLEM SYMPTOMS TABLE ).
2. NG: Repair or replace harness or connector.