PINPOINT TEST G531328p2 : CHECK SPARK PLUG RESISTANCE

Pinpoint Tests

CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00.

NOTE:
- When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to 3 decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.
- Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

PINPOINT TEST G531328p2 : CHECK SPARK PLUG RESISTANCE

G531328t11 : CHECK SPARK PLUG RESISTANCE
1. Remove the suspect spark plug(s).
2. Measure the resistance between:

Spark plug Spark plug
Center electrode tip HT contact

- Is the resistance between 8,000 and 12,000 ohms? (nominal 10,000 ohms)

-> YES
Check ignition coil and circuits. See possible sources list for misfire.

-> NO
INSTALL a new spark plug. CLEAR the DTC and test the system for normal operation.