Inspection Procedure

Check voltage between each terminal of the seat memory switch and SGND of Seat Position Control ECU connector.

Fig 1: Checking Voltage Between Each Terminal Of Seat Memory Switch & SGND Of Seat Position Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PREPARATION:

Remove Seat Position Control ECU with connectors still connected.

CHECK:

Measure voltage between terminal of the seat memory switch and SGND of Seat Position Control ECU connector. (The illustration shows inspection of the Memory 1 as an example.)

OK:

EACH TERMINAL SWITCH POSITION VOLTAGE

At Each Terminal With Switch ON	0 V
At Each Terminal With Switch OFF	10 tilde 14 V

OK: Proceed to next circuit inspection shown in problem symptom table (See PROBLEM SYMPTOMS TABLE ).

NG: Go to next step.

Check seat memory switch.

Fig 2: Checking Continuity Between Terminal 1 & 2 Of Seat Memory Switch Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PREPARATION:

Disconnect seat memory switch connector.

CHECK:

Check continuity of each terminal.

OK:

SWITCH POSITIONS

Switch Position	Terminal
SET Switch ON	1 - 2
Memory Switch 1	2 - 3
Memory Switch 2	2 - 4

NG: Replace seat memory switch.

OK: Go to next step.

Check harness and connectors between Seat Position Control ECU and seat memory switch (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
NG: Repair or replace harness or connector.

OK: Check and replace Seat Position Control ECU.