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)

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Fuel Distance/Mileage Module: Description and Operation

The fuel computer module goes through prove out when powered up and then goes to normal operation, displaying the last function it was set to.
The fuel computer module can be brought up by any one of the three buttons. The E/M button displays in either English (miles, miles/gal., miles/hr.) or metric (km., L/100 km., km/hr.). The SELECT button selects one of the following functions for display:
1. Instantaneous fuel economy.
2. Average fuel economy.
3. Distance to empty (DTE).
4. Distance.
5. Average speed.
6. Back to instantaneous fuel economy.
The RESET button resets displayed function as follows:
1. Average fuel economy is reset to the instantaneous fuel economy value.
2. Distance is reset to zero.
3. Average speed is reset to the instantaneous speed value.