A/T - Will Not Upshift With Cruise Control ON

Classification:
EL01-019

Reference:
NTB01-066

Date:
September 18, 2001

2000-2001 SENTRA A/T WILL NOT UPSHIFT WHEN USING ASCD

APPLIED VEHICLES:
2000-2001 Sentra (B15)

APPLIED VIN:
Vehicles with SR2O engine all vehicles
Vehicles with QG18 engine - vehicles built before
3N1CB51D12L583449

APPLIED DATE:
Vehicles with SR2O engine - all vehicles
Vehicles with QG18 engine - vehicles built before August 7, 2001

SERVICE INFORMATION

If an applied 2000-2001 Sentra exhibits the following symptoms when in Automatic Speed Control Device (ASCD - "Cruise Control") mode and when climbing a hill:

^ The Automatic Transmission (A/T) downshifts normally into 3rd gear, but when climbing is completed, it may take several minutes for the A/T to upshift into Overdrive again and the RPMs stay high.

The ASCD wire may have excessive slack and be out of adjustment.

If this condition should occur, use the Service Procedure provided in this bulletin to adjust the ASCD wire and correct the condition.

SERVICE PROCEDURE

Adjusting the ASCD Wire:

1. Test drive the vehicle under the conditions described in the Service Information section to confirm that the symptoms exist.





2. Loosen the lock nut and adjusting nut at the ASCD wire (see Figure 1 for locations).

3. Ensure the accelerator wire is properly adjusted. Refer to the 2000 or 2001 Sentra Electronic Service Manual (ESM), Section FE (Accelerator Control, Fuel & Exhaust Systems)/Accelerator Control System/Adjusting Accelerator Wire, pages FE-3 and FE-4 for the adjusting procedure.





4. While lifting the throttle drum lightly with a finger, gently pull the ASCD wire toward the passenger side of the vehicle to remove all wire slack (see Figure 1 and Figure 2, below).

5. When the slack in the ASCD wire is removed, tighten the adjusting nut to hold the tightened wire in place. Then loosen the adjusting nut 1/2 to 1 turn (see Figure 1 for location of adjusting nut).

6. Tighten the lock nut to 69-96 in-lbs (0.8-1.1 kg-m).

NOTE:
When wire adjustment and lock nut tightening is complete, ensure that the rubber grommet on the lock nut side is properly positioned (see Figure 1) and that the ASCD wire is not under "tension".

7. Repeat the test drive under the conditions described in the Service Information section to verify that the condition has been corrected.

CLAIMS INFORMATION





Submit a Primary Failed Part (PP) line claim using the claims coding shown.