Golf III L4-1984cc 2.0L SOHC (1993)
Engine Control Module: Adjustments
Because of its adaptive capability, the Motronic ECM must be returned to its reference settings IF:
1.
Any of these components have been disconnected while the engine is running.
^
Engine Coolant Temperature Sensor
^
Mass Air flow Sensor
^
Throttle Position Sensor
^
Heated Oxygen Sensor
2.
Any of these components have been adjusted or replaced:
^
Motronic ECM
^
Mass Air flow Sensor
^
Throttle Position Sensor
^
Throttle body assembly
RESETTING REQUIREMENTS
1.
Engine oil temperature must be at least 176° F (80° C) and radiator cooling fan has operated at least once.
2.
All electrical consumers switched "OFF" (radiator cooling fan must not be running during checking).
3.
A/C switched "OFF".
4.
Throttle Position Sensor is functioning properly.
5.
Idle stabilization system operating properly, the valve must vibrate or hum while the ignition is "ON".
6.
The exhaust system must be free of leaks.
7.
There can be NO intake manifold vacuum leaks.
8.
The Heated Oxygen Sensor must be operating properly.
9.
Throttle cable adjustment must be OK.
10.
DTC memory must be cleared of stored trouble codes. If found, faults must be corrected. DTC memory MUST be erased before starting.
VEHICLE AND EQUIPMENT SET-UP
1.
Vehicle in PARK or NEUTRAL with parking brake set.
2.
Turn ignition switch "OFF".
3.
Connect VW 1367 engine tester using VAG 1367/8 inductive pickup, or a suitable strobe timing light and tachometer may be used.
