Cruise Control - Poor Response

87nissan2

Reference: Date:
TECHNICAL BULLETIN TS87-077 May 4, 1987
Classification: Section: Models:

EL87-008 Electrical System 1986.5 4WD Truck
POOR CRUISE CONTROL RESPONSE


APPLIED MODEL: 1986.5 SE 4WD Truck (D21) with power package option

SERVICE INFORMATION

Some 1986.5 SE 4WD Trucks built before the production date below may exhibit poor cruise control (A.S.C.D.) response.

Affected Vehicle Production Date

JAPAN and U.S. built vehicles: BEFORE APRIL 1, 1986



SERVICE PROCEDURE

1. Before attempting diagnosis, make sure that the accelerator wire is properly adjusted as follows:

A. Make sure the throttle valve fully opens when the accelerator pedal is fully depressed, and returns to idle when released.

B. Adjust the accelerator pedal free play to specification by turning the adjusting nut at the throttle body.



2. After adjusting accelerator wire, adjust the A.S.C.D. wire as follows:

A. Turn the adjusting nut 1/2 to 1 turn towards the covered cable wire. This must be performed properly to prevent response delay in A.S.C.D. operation.

B. Securely tighten the lock nut to 5.8 - 7.2 ft.lb.; (0.8 - 1.0 kg-m) to hold the adjusting nut in place.
CAUTIONS:

^ Make sure not to twist the A.S.C.D. wire when removing it.

^ Do not tighten the A.S.C.D. wire excessively during adjustment. To prevent over tightening, measure the idle speed before and after adjustment and then compare. If the A.S.C.D. wire is too tight, the idle speed will increase.



3. If the A.S.C.D. wire adjustment was ineffective or the vehicle accelerates too slowly to the set point, replace the A.S.C.D. control unit with a countermeasure unit (P/N 18930-09G00). Please note that the control unit part number has not changed. However, countermeasure units are identified by a red part label while non-countermeasure units have a yellow part label.
PARTS INFORMATION


PART DESCRIPTION PART NUMBER IDENTIFICATION


Former A.S.C.D. Yellow Part Label
Control Unit 18930-09G00
Countermeasure A.S.C.D. Red Part Label
Control Unit


WARRANTY INFORMATION

Refer to Section PN in the Warranty Flat Rate Manual for Warranty Information.