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

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Quick Test Procedures


1. Record and clear EEC-IV Quick Test codes.
2. Verify that the transmission fluid level is correct.
3. Warm engine to operating temperature.
4. With transmission in D range, press the Overdrive Cancel Switch (LED light should illuminate) and moderately accelerate from stop to 40 mph (64 km/h). This will allow the transmission to shift into third gear. Hold speed and throttle opening steady for a minimum of 15 seconds (30 seconds above 4000 feet altitude).
5. Press Overdrive Cancel Switch (LED light should turn off) and accelerate from 40 mph (64 km/h) to 50 mph (80 Km/h). This will allow the transmission to shift into fourth gear. Hold speed and throttle position steady for a minimum of 15 seconds.
6. With transmission in fourth and maintaining steady speed and throttle opening, lightly apply and release brake (to operate stop lamps). Then hold speed and throttle steady for an additional 5 seconds minimum.
7. Brake to a stop and remain stopped for a minimum of 20 seconds with the transmission in D range.
8. Repeat steps 4 through 6 at least five times.
9. Perform EEC-IV Quick-Test and record continuous codes. If the codes appear, refer to the Pinpoint Test for the appropriate service code.