Operation CHARM: Car repair manuals for everyone.

Ignition Power Stage: Testing and Inspection

Special Tools, Testers And Auxiliary Items
- VAG 1598/18testbox
- Multimeter (Fluke 83 Or Equivalent)
- VAG 1527B Voltage Tester
- Connector Test Kit VW 1594
- Wiring Diagram

Checking Voltage Supply
- Disconnect 3-pin Connector From Ignition Coil.




- Connect multimeter using test leads from VW 1594 to measure voltage at terminals 1 and 3 of connector.
- Switch ignition on.
- Measure voltage between terminals 1 and 3.
Specification: 9-14.5 volts
- Switch ignition off.

If the specification is not attained:
- Check the wiring between 3-pin connector and relay panel for open circuit using wiring diagram.
- Terminal 1 and relay panel
- Terminal 3 and relay panel
Resistance: Max. 1.5 ohms

If no wiring malfunction is detected and voltage was present between terminals 1 and 3:
- Replace ignition coil -N152-.

If no wiring malfunction is detected and no voltage was present between terminals 1 and 3:
- Replace Engine Control Module -J220-.
- Read the readiness code, If DTC memory has been erased, repair must be verified via appropriate display group: Readiness code, creating.

Checking Activation
- Disconnect the engine harness center connector.




- Connect VAG 1527B voltage tester with test leads from VW 1594 and adapters VW 1594/15 to terminals 2 and 3 of the connector.
- Operate starter and check ignition signal from ECM.
- LED must flicker
- Switch ignition off.

If the LED does not flicker:




- Connect VAG 1598/18 test box to ECM wiring harness.
- Check wiring between 3-pin connector and test box for open circuit according to wiring diagram.
Terminal 2 and test box socket 8
Resistance: max. 1.5 ohms
- Additionally check the wiring for short circuit to each other.
- Terminal 1 and test box socket 8
- Terminal 3 and test box socket 8
Specification: Infinite Ohms

If no wiring malfunction is detected and voltage was present between terminals 1 and 3:
- Replace ECM -J220-.
- Read the readiness code. If DTC memory has been erased, repair must be verified via appropriate display group: Readiness code, creating.

If the voltage supply and activation is OK.:
- Reconnect 3-pin harness connector and ignition wire to ignition coil.




- Connect LED voltage tester with test leads to terminals 1 and 15 on ignition coil.

CAUTION:: During the following test do not touch the terminals of the ignition coil or test cables.

- Operate starter.
- The LED must flicker
- If necessary, replace ignition coil power output stage.