Failure To Initialize Can Interface Module (SS001-05)

Publication date: 2005-03-11
Reference number: SS001-05

FAILURE TO INITIALIZE CAN INTERFACE MODULE

TECHNICAL SERVICE BULLETIN

Reference Number(s): SS001-05, Date of Issue: March 11, 2005

LEXUS:	2004 - 2005 Applicable Models
GROUP:	SPECIAL SERVICE TOOLS
COPYRIGHT:	© 2018 Lexus, a division of Toyota Motor Sales, USA License Agreement TMS1002

Introduction

If the Diagnostic Tester fails to initialize CAN-based communication with on-board vehicle controllers, a damaged cable or inoperative CAN Interface Module may be at fault. This bulletin provides test procedures to check the integrity of the Diagnostic Tester cables and the CAN Interface Module.

Applicable Vehicles

2004 - 2005 model year CAN-equipped vehicles including 2004 model year LS 430

Required SSTs

Fig 1: Identifying Special Service Tools (SSTs)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: Additional Diagnostic Tester Kits, CAN Interface Modules, Program Cards, or other SSTs may be ordered by calling SPX/OTC.

Warranty Information

WARRANTY INFORMATION

OP CODE	DESCRIPTION	TIME	OFP	T1	T2
N/A	Not Applicable to Warranty	-	-	-	-

Diagnostic Procedure

Failure to initialize CAN-based communications between the Diagnostic Tester and on-board vehicle controllers can be caused by the following issues:

The 14/26 Pin DLC Cable is damaged, causing an open communication circuit.
The DLC Cable is damaged, causing an open communication circuit.
The CAN Interface Module is damaged.
The vehicle's CAN Communication System has a fault, requiring further vehicle diagnostics.
NOTE: The Diagnostic Tester may operate properly in other modes such as OBD/MOBD and CARB OBDII with a damaged cable or CAN module.

Fig 2: Identifying Diagnostic Tester
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To determine the cause of communication error, perform the following steps:

Using the Diagnostic Tester, perform the CAN MODULE VERSION self test. Select DIAGNOSIS/SETUP/SELF TEST and perform the following screen flow.
NOTE: Before performing test, confirm that the Diagnostic Tester, 14/26 Pin DLC Cable, and CAN Interface Module are all securely connected.

Fig 3: Self Test Menu Display
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SELF TEST Result:
1. OK: SELF TEST PASSED: Go to step 3 . , This response verifies the CAN module and the 14/26 Pin DLC Cable are OK.
2. NG: SELF TEST FAILED: CAN VIM did not respond. Go to step 2.
Perform the Data Link Self Test (Fig 4).

Fig 4: Data Link Self Test
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DATA LINK SELF TEST Result:
1. OK: DATA LINK TEST PASSED: Replace CAN Interface Module (P/N 01002744).
2. NG: DATA LINK TEST FAILED: Replace 14/26 Pin DLC Cable (P/N 02001637).
Inspect the J1962 OBDII Cable (CAN DLC).
1. Disconnect the CAN Interface Module from the J1962 OBDII Cable (CAN DLC).
  A small Phillips screwdriver is required to separate the CAN Interface Module from the J1962 OBDII Cable.
2. Test the J1962 OBDII Cable (CAN DLC) for continuity.
Fig 5: Inspecting J1962 OBII Cable
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J1962 OBDII Cable (CAN DLC) Test Result:
1. OK: Suspect vehicle side problem. Refer to the applicable model year Repair Manual: Diagnostics: CAN Communication System: Problem Symptoms Table: Check CAN Bus Line.
2. NG: (More than 6 W) Replace the J1962 OBDII Cable (CAN DLC, P/N 02003180).
NOTE: If the Diagnostic Tester successfully communicates with another CAN-equipped vehicle, suspect vehicle side problem.