Jetta L4-1781cc 1.8L SOHC (RV, PF) (1989)
Ignition Coil: Testing and Inspection
Ignition Coil And Ground Strap
NOTE: To further assist you during testing, use the wiring diagrams located in CHASSIS ELECTRICAL DIAGRAMS.
CAUTION: Always turn ignition OFF when connecting or disconnecting terminals.
Be sure to check the integrity of the wires, connectors, ignition switch, battery terminals and fuses before replacing an expensive
component.
1.
Check coil ground strap for connection and integrity. Repair as needed.
2.
Connect a voltmeter between coil terminal 15 (+) and ground.
3.
Turn ignition to the ON position. Reading should be:
Approx. 12 volts
If not, check wiring, connectors (incl. battery terminals), fuse and ignition switch. Repair as needed and retest.
4.
Turn ignition OFF.
5.
Disconnect all wires to the ignition coil.
Checking Coil Between Terminals 1 And 15
6.
Connect an ohmmeter between terminal 1 (-) and 15 (+). Reading should be:
Coil w/ green label: 0.52 - 0.76 ohm
Coil w/ gray label: 0.6 - 0.8 ohm
If not, replace and retest with new coil.