Ignition Coil, Checking
Ignition Coil, Checking
Special tools and equipment
- VAG 1598/18 Test Box
- Fluke 83 multimeter (or equivalent)
- VAG 1527B LED Tester
- VW 1594 adapter kit
- Wiring diagram
Test conditions
- Battery Positive Voltage: 11.5 Volts minimum
- Engine Speed sensor OK; checking Testing and Inspection
- Camshaft Position sensor OK; checking Testing and Inspection
Test sequence
- Disconnect 5-pin harness connector from ignition coil.
Voltage supply, checking
- Switch Fluke 83 multimeter to 20 Volt DC range.
- Connect multimeter between terminals 1 + 5 of disconnected harness connector using jumper wires from VW 1594 adapter kit.
- Switch ignition on and measure supply voltage.
- must be 11.5 Volts minimum
- Switch ignition off.
If no voltage present:
- Check for open circuit between 5-pin harness connector terminal 1 and Ground using wiring diagram.
- wire resistance: 1.5 Ohms maximum
- Check for open circuit between 5-pin harness connector terminal 5 and fuse/relay panel using wiring diagram.
- wire resistance: 1.5 Ohms maximum
Activation, checking
CAUTION!
Do not touch the ignition coil terminals or test cable attachments during the following test.
- Remove fuse 18 from fuse/panel.
- Using jumper wires from VW 1594 adapter kit, connect VAG 1527B LED tester to disconnected connector:
- terminals 5 + 2 (ignition output 1)
- terminals 5 + 3 (ignition output 3)
- terminals 5 + 4 (ignition output 2)
- Operate starter and check ignition signal from ECM -J220-.
- LED must flicker
- Switch ignition off.
If LED does not flicker:
- Replace ECM -J220-.
- Perform Basic setting.
- Read-out Readiness code. Refer to Monitors, Trip and/or Drive Cycle (Readiness Codes)/Readiness Code Checking. Testing and Inspection
If DTC memory has been erased:
- Create Readiness code. Refer to Monitors, Trip and/or Drive Cycle (Readiness Codes)/Readiness Code Generating Testing and Inspection
If LED flickers:
- Connect Test Box VAG 1598/18 to ECM wiring harness
- Check for open circuit between Test Box and 5-pin harness connector using wiring diagram, connecting as follows:
terminal 2 + socket 8
terminal 3 + socket 60
terminal 4 + socket 52
- Wire resistance: 1.5 Ohms maximum
- Check wires for shorting to one another as follows:
terminal 2 + socket 60
terminal 2 + socket 52
terminal 3 + socket 52
- specification: infinity Ohms
If wiring OK and voltage present between terminals 1 + 5:
- Replace ignition coil -N152-.
Secondary winding, checking
- Check secondary winding at terminal 4 between:
Cyl. 1 and Cyl. 6
Cyl. 3 and Cyl. 4
Cyl. 2 and Cyl. 5
- specification: 3.6 to 4.4 K Ohms
If specifications not obtained:
- Replace ignition coil -N152-.