Testing and Inspection Up to Jan. 1993

Requirements

Digital volt/ohm meter (DVOM)
VW 1594 adaptor kit or equivalent jumper wires
US 1115 LED tester or equivalent
Refer to Tools and Equipment for test equipment specifications

Checking Voltage supply

- Disconnect Hall sensor harness connector at ignition distributor

- switch DVOM to 20 Volt range

- Connect multimeter between outer terminals of harness connector using jumper wires from VW 1594 adaptor kit

- Switch ON ignition

- Must be 4.5 Volts minimum

^ If no voltage indicated

- Switch OFF ignition

- Check wiring using wiring diagram

^ If wiring OK

- Replace engine control module (J 220)

Checking Function

- Remove fuse 18

- Slip rubber boot for Hall sensor harness connector away from the connector (leaving harness connector connected, but with terminals exposed to allow access for test connections)

- Connect LED tester between center terminal of connector and brown white wire using jumper leads.

- Operate starter

- LED tester must flicker

^ If NO

- Replace Hall sensor