Ignition Power Stage: Testing and Inspection

IGNITION COIL POWER OUTPUT STAGE, CHECKING

Special tools, testers and auxiliary items
- VAG 1598/18 test box
- 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 pane

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 (ECM) -J220-
- Read the readiness code. If DTC memory has been erased, repair must be verified via appropriate display group See Readiness code, creating. Refer to "On-Board Diagnostics II With VAG 1551". Testing and Inspection

Checking activation
- Disconnect the engine harness center connector item 11 in "Multiport Fuel Injection System Components Overview". Locations





- 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: Infinity 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 See Readiness code, creating. Refer to "On-Board Diagnostics II With VAG 1551". Testing and Inspection

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.