NETWORKING: CAN COMMUNICATION SYSTEM: DESCRIPTION (2008 Sequoia)

Last Modified: 11-29-2007		1.6 C
Service Category: Power Source/Network	Section: Networking
Model Year: 2008	Model: Sequoia	Doc ID: RM000003F0A000X
Title: NETWORKING: CAN COMMUNICATION SYSTEM: DESCRIPTION (2008 Sequoia)

DTC

U0230

Lost Communication with Rear Gate Module

DESCRIPTION

DTC Code	DTC Detection Condition	Trouble Area
U0230	No communication from power back door ECU	Power source circuit of power back door ECU Power back door ECU Power back door ECU branch wire or connector

HINT:

w/ Power back door system

1.	DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

2.	CHECK FOR OPEN IN CAN BUS WIRE (POWER BACK DOOR ECU BRANCH WIRE)

(a) Disconnect the O30 power back door ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
O30-6 (CANP) - O30-5 (CANN)	Ignition switch off	54 to 69 Ω

3.	CHECK HARNESS AND CONNECTOR (POWER BACK DOOR ECU - BATTERY AND BODY GROUND)

(a) Reconnect the cable to the negative (-) battery terminal.

(b) Disconnect the O30 power back door ECU connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
O30-11 (GND) - Body ground	Always	Below 1 Ω

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage: