Ignition Coil - Revised Checking Procedures

Group: 28

Number: 93-01

Date: April 3O, 1993

Subject:
Ignition Coil, Checking (Revised Procedure)

Model(s):
Golf W/ 1.8 liter

The ignition coil and power output stage checking procedures on pages 28-14 through 28-16 of the 1.8 liter Fuel Injection and Ignition Repair Manual are incorrect.

Only use the procedures on the following pages when performing these checks.

These pages have been formatted for the 1.8 liter Fuel Injection and ignition Repair Manual. They will be integrated into that manual at the time of the next printing.

Ignition coil (N 152), checking

- Disconnect power output stage harness connector from power output stage

- Disconnect coil wire from ignition coil (N 152)

- Switch Fluke 83 multimeter to resistance range

Ignition Coil:

- Connect multimeter between terminals 1 and 15 of ignition coil and measure primary resistance

^ must be 0.5 to 0.7 Ohms

- Connect multimeter between terminals 4 and 15 and measure secondary resistance

^ must be 3000 to 4000 Ohms

If NO

- Replace ignition coil (N 152) complete with power output stage (N 157) as shown in illustration 28-888 on page 28-2

- Repeat the primary and secondary resistance checks

Ignition coil power output stage (N 157), checking

Requirements

^ electrical test step 19 OK, page 01-29

^ ignition coil OK

Power supply, checking

- Disconnect ignition coil power output stage harness connector

- Switch Fluke 83 multi meter to 20 Volt range

Ignition Coil Connector:

- Connect multimeter between terminals 1 and 3 of harness connector using
adaptor leads from VW 1594 adaptor kit

- Switch ON ignition

^ must be approx. battery voltage

Activation, checking

- Disconnect the fuel injector harness connector at the fuel injector

Ignition Coil Connector:

- Connect LED tester VAG 1527 B between terminals 2 and 3 of power output stage harness connector -4- using jumpers from the VW 1594 adaptor kit

- Operate starter

^ LED tester must flicker

If NO

- Replace Engine Control Module (J 257)

- Re-connect ignition coil and power output stage

Ignition Coil:

- Connect LED tester VAG 1527 B between terminals 1 and 15 of the ignition coil using jumpers from the VW 1594 adaptor kit

Warning
Do NOT touch the exposed terminals of the ignition coil and adaptors during the following check,

- Switch ON the ignition

^ LED tester must light up for 1 to 2 seconds

- Operate the starter motor

^ LED tester must flicker

- Replace the power output stage (N 157) if necessary