Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (BATTERY - MEMORY SEAT ECU)

Disconnect the front power seat switch connectors.

Measure the voltage according to the value(s) in CONNECTOR TERMINAL VOLTAGE SPECIFICATION .

Standard:

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
P28-4 (IG) - Body ground	Ignition switch ON	10 to 14 V
P28-8 (SYSB) - Body ground	Always	10 to 14 V
P27-5 (+B) - Body ground	Always	10 to 14 V

Fig 1: Disconnecting Front Power Seat Switch Connectors

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

OK: GO TO NEXT STEP.

CHECK HARNESS AND CONNECTOR (MEMORY SEAT ECU - BODY GROUND)

Measure the resistance according to the value(s) in CONNECTOR TERMINAL RESISTANCE SPECIFICATION .

Standard:

CONNECTOR TERMINAL RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
P27-1 (GND) - Body ground	Always	Below 1 Ω

Fig 2: Identifying ECU Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE