Operation CHARM: Car repair manuals for everyone.
Home >> Jaguar >> 2010 >> XF (X250) V8-4.2L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Testing and Inspection >> Pinpoint Tests
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Pinpoint Tests





Pinpoint Tests

PINPOINT TEST G1001950p1 : CHECK SPARK PLUG RESISTANCE

NOTE:
When installing new spark plugs, only spark plugs to the recommended specification must be used.

G1001950t1 : CHECK SPARK PLUG RESISTANCE
1 Remove the suspect spark plug(s).
2 Measure the resistance between:





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

->Yes
Check ignition coil and circuits. Refer to the DTC Index for ignition coil and circuit tests.

->No
Install new spark plug(s). Clear the DTC and test the system for normal operation.

pro multis · About Operation CHARM