Engine Controls - DTC/Information Code Retrieval
ENGINEEG009-05
May 23, 2005
Title:
RETRIEVING DIAGNOSTIC TROUBLE CODES & INFORMATION CODES
Models:
'06 RX 400h
Introduction
The purpose of this bulletin is to provide a handy reference and helpful tips for use in extracting Diagnostic Trouble Codes (DTCs) and detailed Information (INF) Codes from the Hybrid Vehicle (HV) ECU on an RX 400h vehicle.
Applicable Vehicles
^ 2006 model year RX 400h vehicles.
Required SSTs
NOTE:
Additional Diagnostic Tester Kits, CAN Interface Modules, Program Cards, or other SSTs may be ordered by calling SPX-OTC at 1-800-933-8335.
Warranty Information
Diagnostic Procedure
DTC Check
1. Check DTC (HV Control ECU).
A. Connect the Diagnostic Tester to DLC3.
B. Turn the ignition switch to the "ON" position and turn the Diagnostic Tester on.
C. Use the tester to check the DTCs and freeze frame data and then write them down. On the tester, enter the following menus: DIAGNOSIS / OBD/MOBD / 2006 RX400h / HV ECU / DTC INFO / CURRENT CODES.
2. Check freeze frame data and information.
A. If a DTC is present, select that DTC in order to display its freeze frame data.
B. Read freeze frame data recorded when the DTC was set.
NOTE:
An information code (INF code) may be displayed in one of the "INFORMATION" lines 1 to 5. Check the details using the procedures in the following steps.
HINT:
^ In the case shown in the diagram, refer to troubleshooting for DTC P0A0D and INF code 350.
^ Information codes contain additional data vital to proper diagnosis of many HV-related concerns.
C. Read the information. (It may be necessary to scroll down to view the information codes.)
a. Select the item that has an INF code from among INFORMATION 1 to 5 on the freeze frame data screen.
b. Press "ENTER."
c. Information is displayed as shown in the diagram.
3. Check DTC (systems other than HV Control ECU).
HINT:
The HV Control ECU maintains mutual communication with the computers, including the ECM (SAE term: Powertrain Control Module/PCM), battery ECU, skid control ECU, power steering ECU, and others. Therefore, if the HV Control ECU outputs a warning, it is necessary to check and record the DTCs of all the systems.
A. Connect the Diagnostic Tester to DLC3.
B. Turn the ignition switch ON and turn the Diagnostic Tester on.
C. On the tester, enter the following menus: DIAGNOSIS / OBD/MOBD / CODES (All).
D. If DTCs are present, check the relevant systems.