Last Modified: 11-29-2007 1.6 U
Service Category: Steering Section: Power Assist Systems
Model Year: 2008 Model: Sequoia Doc ID: RM000001GM7005X
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: TERMINALS OF ECU (2008 Sequoia)

TERMINALS OF ECU

1. CHECK POWER STEERING ECU



(a) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

H38-2 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

H38-3 (CANL) - H38-2 (GND)

W - W-B

CAN communication

Ignition switch ON

Pulse generation

H38-6 (IG1) - H38-2 (GND)

GR - W-B

IG power supply

Ignition switch ON

11 to 14 V

H38-8 (CANH) - H38-2 (GND)

GR - W-B

CAN communication

Ignition switch ON

Pulse generation

H38-9 (SOF+) - H38-4 (SOF-)

LG - O

Power steering solenoid valve signal
  • Engine idling
  • Steering wheel turned to right or left

Pulse generation

If the result is not as specified, the ECU may have a malfunction.