Operation CHARM: Car repair manuals for everyone.
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

Vehicle Speed Sensor

IGNITION TIMING Not Adjustable

AIR TEMP. SENSOR SIGNAL TO ECU Approx. 2.32V @ 75°F (24°C)

COOLANT TEMP. SENSOR SIGNAL TO ECU Approx. 2.06V @ 86°F (30°C)

OXYGEN SENSOR
Voltage Range 0V - 1.0V

ROAD SPEED SENSOR
Pulse frequency 7870 / mile (4920 / km)

THROTTLE POTENTIOMETER
Voltage Reference Signal Range 240mV - 4.9V