Operation CHARM: Car repair manuals for everyone.
Home >> Isuzu >> 1988 >> Impulse L4-2254cc 2.3L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Knock Sensor >> Testing and Inspection
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

Knock Sensor: Testing and Inspection

Fig. 226 Checking Knock Sensor:





1. Connect ohmmeter as shown in Fig. 226.
2. Resistance readings should be between 650-800 ohms.
3. If not within specifications, replace the knock sensor.



pro multis · About Operation CHARM