Engine Controls - Improved Accelerator Pedal Sensor, EML

Group 12
Engine - Electrical



Bulletin Number
12 10 88 (1740)



Woodcliff Lake, NJ
June 1989
Technical Dept.



This Service bulletin supersedes S.I. 12 10 88 (1740) dated January 1989. It lists new labor operations and allowances. Please remove and discard S.I. 12 10 88 (1740) dated January 1989 from your S.I. binder.

SUBJECT:
Improved PWG Accelerator Pedal Sensor

MODEL:
750iL

Situation:
Continuing product improvement has provided a new accelerator pedal sensor for the EML system.

A) Up to week 50/87, pedal sensor P/N 12 72 1 718 749 was installed on 750iL models.

B) As of week 50/87, the 750iL is equipped with the new version, P/N 12 72 1 720 418.

Any previous version pedal sensors (A) still in parts stock may be used on preweek 50/87 vehicles. However, the parts system will now only supply the later version (B) as replacement parts. Consequently, some older vehicles may require additional parts in conjunction with the new version pedal sensor.

Note:
The early version PWG pedal sensor is as dependable and reliable as the later version. Therefore it should only be replaced when it has actually failed, as verified by the Diagnostic Module printout. The printout should include the fault memory and all pertinent test page attached to the old part.

Replacement Procedure:
EARLY VEHICLES (pre-week 50/87)

1) If there is no locating point for the external return spring on the accelerator pedal shaft, the shaft must be replaced with the later version.

2) Replace and adjust pedal sensor and, if required, the accelerator pedal shaft.

3) Push the external return spring over the open end of the pedal shaft and attach in the locating point recess.



Parts Information:
NEW VERSION COMPONENTS

Description Part Number

Accelerator pedal shaft 35 41 1 158 204

External return spring 35 41 1 157 794

Pedal sensor (PWG) 12 72 1 720 418

Warranty Information:
Parts and labor reimbursable under the terms of the BMW New Car Limited Warranty of 3 Years/36,000 Miles.

Defect code: 12 72 00 12 00

1. Labor operation: 12 70 000 (checking function of EML)
Labor allowance: WT (work time)

2. Labor operation: 12 72 520 (replacing pedal sensor)
Labor allowance: 7 FRU

3. Labor operation: 35 41 082 (replacing accelerator spring)
Labor allowance: 5 FRU