MIL ON - DTC 12 or 73 (Throttle Position Sensor)

Group 13
Fuel System

Bulletin Number
13 03 93 (3826)

Woodcliff Lake, NJ
June 1994
Product Engineering

This Service information bulletin supersedes S.I. 13 03 93 (3826) dated July 1993 which should be removed from your S.I. binder and discarded.

SUBJECT:
Engine Control Module Fault Code for Throttle Position Sensor

MODELS:
E34 and E36 with M50 Engine

Complaint:
"Check Engine light on and failure indicator for transmission control module on (only on automatic transmission vehicles) with the transmission operating in the "Failsafe" mode.

Correction:
If a vehicle with engine control module fault code 12 (M50) or fault code 73 (M50TU) and transmission control module fault code 105 (only on automatic transmission vehicles) is encountered and the throttle position sensor and its circuit have tested good, and no other outside influence can be found, the idle speed control valve is to be replaced. Other outside influences may include, but are not limited to, the floormat pushed up against the gas pedal, a misadjusted throttle cable, or a misadjusted cruise control actuator assembly.

NOTE:
PLEASE RETURN THE PART WITH THE CORRESPONDING SERVICE TESTER PRINTOUT(S). IDLE SPEED CONTROL VALVES RECEIVED WITHOUT THESE PRINTOUTS WILL BE RETURNED AND THE CLAIM DEBITED.

Parts Information:

Description Part Number

Idle speed control valve (M3.1, Non-VANOS) 13 41 1 726 209
Idle speed control valve (M3.3.1, VANOS M50TU) 13 41 1 738 981





Warranty Information:
Parts and labor are reimbursable under the terms of the BMW Emissions Warranty of 5 Years/5O,000 Miles.