Engine Controls - TCS/Slip Indicators ON/DTC's Set

Classification:
EC99-009B

Reference:
NTB99-078B

Date:
August 30, 2000

2000 MAXIMA TCS AND SLIP LIGHTS "ON"

This amended version of NTB99-078a updates the Service Procedure Section of the bulletin. Please discard all paper copies of NTB99-078a.

APPLIED VEHICLE:
2000 Maxima (A33) with Traction Control System (TCS)

APPLIED VINs:
Vehicles built before:
JN1CA31A9YT005374
JN1CA31DXYT515808
JN1CA31A5YT203868
JN1CA31D4YT713719

APPLIED DATE:
Vehicles built before June 24, 1999

SERVICE INFORMATION

If the "TCS" and "Slip" indicator lights on a 2000 Maxima with Traction Control System (TCS) remain illuminated during normal driving conditions and the Diagnostic Trouble Codes (DTCs) and LAN Abnormal Signals described in the Service Procedure are confirmed, the cause may be the ECM program.

There is an updated ECM program available to address this incident if it should occur. Use the Service Procedure outlined in this bulletin to correct this condition.

For an introduction to and description of ECM Reprogramming, please refer to NTB00-006.

NOTE:
When the ECM is reprogrammed, it is not necessary to complete the NATS (Nissan Anti-Theft System) for all ignition keys or the Idle Air Volume Learning Procedure (Set Base Engine Idle).

SERVICE PROCEDURE

The service procedure involves four steps:

^ Confirm the two indicator lights are on.

^ Confirm the codes indicated in Step 2, are stored in Engine self- diagnosis.

^ Download the ECM Reprogramming data from ASIST to CONSULT-II.

^ Install the ECM Reprogramming data into the vehicle ECM.

Confirm Bulletin Related Indicator Lights Are On and Related Codes Are Stored.

1. Confirm that the "TCS" and "Slip" indicator lights are on.

2. Confirm that Engine self-diagnosis has stored DTC P1211 (ABS/TCS Control Unit) or P1212 (ABS/TCS Communication Line) and any combination of the following codes are stored in the ABS self-diagnosis memory:

LAN Abnormal Signal 1,
LAN Abnormal Signal 2,
LAN Abnormal Signal 3,

NOTE:
If the vehicle has any other codes stored, such as ABS Wheel Sensor, this bulletin does not apply. Refer to the Service Manual diagnosis for ABS/TCS to resolve the incident.

Download the ECM Reprogramming data from ASIST to CONSULT-II and Install the ECM Reprogramming data into the vehicle ECM.

CAUTION:
The ECM can be permanently damaged if the reprogramming procedure is not performed correctly.

NOTE:
You must determine whether the vehicle has Federal or California emissions. The ECM programs are different. Refer to the under hood emission control information label.

a. In ASIST go into Info Tool Box, then CONSULT Utilities, then ECM Data.

b. Select model/model year for the applied vehicle.

c. Select the applicable vehicle configuration for your vehicle from that listed in the upper right ECM data description window.

d. Click "Continue" button to download the new data from ASIST into CONSULT-II.

e. Perform download from CONSULT-II to the vehicle's ECM.

f. Using CONSULT-II access and print the new ECM P/N.





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