Vanagon F4-1915cc 1.9L (1984)
Engine Control Module: Testing and Inspection
Ohms Measurements
CAUTION: WHEN MEASURING OHMS DISCONNECT THE ECU FROM THE HARNESS PLUG AND NEVER TURN THE IGNITION KEY
ON. IT IS P0SSIBLE THAT FAILURE TO FOLLOW THESE STEPS WILL RESULT IN DAMAGE TO THE ECU.
Grounds
Coolant Temperature Sensor
Air Temperature Sensor
Throttle Switch
*
The same input (pin 11) on the ECU is both for the closed throttle and the full load signal. Continuity will exist between pin 6 & 11 when the
throttle is closed or at full load positions.
Air Flow Sensor
1
Flap on air flow sensor closed or air flow sensor plate at rest position. Resistance increases as flap or plate opens.
2
Flap on air flow sensor opened to maximum or air flow plate deflected to maximum.
Auxiliary Air Valve
Injector Group(s)
