OBD II - Erasing DTCs & Freeze Frame Data (PDS)
PRODUCT GENERAL INFORMATIONPG005-01
January 26, 2001
Title:
ERASING DIAGNOSTIC TROUBLE CODES DURING PDS
Models:
'01 LS 430
Introduction
To minimize battery discharge during transportation and storage, the D/C CUT fuse is removed at the assembly plant. Be sure to reinstall the fuse during Pre-Delivery Service (PDS).
Once the D/C CUT fuse has been installed, the Diagnostic Trouble Codes (DTC) and Freeze Frame Data might be stored in the systems as shown:
Please erase the DTCs and Freeze Frame data listed above after the D/C CUT fuse is reinstalled during PDS at the dealership.
Applicable Vehicles
^ 2001 model year LS 430 vehicles.
Warranty Information
Erasing Procedure
DTC and Freeze Frame Data Erasing Procedure
There are two methods used to erase DTCs and Freeze Frame Data:
1. Using the diagnosis check-wire.
2. Using the Lexus Diagnostic Tester with software version 8.0a.
1. Using the diagnosis check-wire.
A. Install the D/C CUT fuse (20A) to the correct position in the Fusible Link Block in the engine compartment. (Refer to TSIB No. PG 006-00.)
B. Using the SST
(P/N 09843-18040), connect terminals TC and CG at the DLC 3 connector.
C. Turn the ignition switch to the ON position and verify that the SPORT mode indicator light blinks DTC 77 for the Electronic Modulated Air Suspension System.
D. Push DISP 1 button on the steering wheel and verify that CRUISE 67 and/or CRUISE 69 are displayed on the multi-information display.
NOTE:
^ At this time, the VSC OK may also be displayed in the multi-information display.
^ Even though the VSC OK is displayed, the Freeze Frame Data may have a fault recorded in memory.
E. Depress and fully release the brake pedal 8 or more times within 5 seconds.
NOTE:
By performing the above steps, DTC 77 and Freeze Frame Data are erased.
F. Confirm that the SPORT mode indicator light is blinking a normal code.
G. Turn the ignition switch to the LOCK position and remove the EFI No. 1 fuse (30A) and ETCS fuse (10A) from Engine Room No. 1 Relay Block for 10 seconds or more. Then reinstall the two fuses to the correct positions.
NOTE:
By performing the above steps, DTC 67 and 69 are erased.
H. Turn the ignition switch to the ON position to verify that CRUISE OK is displayed in the multi-information display.
I. Remove the SST from DLC 3.
2. Using the Lexus Diagnostic Tester.
A. Install the D/C CUT fuse (20A) to the correct position in the Fusible Link Block in the engine compartment. (Refer to TSIB No. PG006-00.)
B. Connect the hand-held tester to DLC 3.
C. Turn the ignition switch to the ON position.
D. Erase the following DTCs and Freeze Frame Data:
a. DTC C1777 of the Electronic Modulated Air Suspension System.
b. Freeze Frame Data of the VSC System.
Although no DTCs are stored in the VSC system, use the tester to erase the Freeze Frame Data that may be stored in memory.
c. DTC P1576 and P1578 of the Adaptive Laser Cruise Control System.
E. Disconnect the tester from DLC 3.
Electronic Modulated Air Suspension System DTC Erasing Procedure
VSC System DTC Erasing Procedure
Adaptive Laser Cruise System DTC Erasing procedure