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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Timer Unit: Service and Repair



1. Turn ignition OFF.

2. On Bronco, and F-Series models, module is attached to instrument cluster to left of steering column. On E-Series models, module is located under lefthand side of instrument panel.

3. On all models, insert a suitable Phillips head screwdriver through 0.2 inch diameter hole located on module near reset sticker, then press down lightly and hold.

4. Turn ignition to RUN while still pressing down lightly on screwdriver. Emissions maintenance lamp should remain lit for as long as screwdriver is pressing down. Hold screwdriver in position for approximately five seconds.

5. Remove screwdriver. Lamp should go out after approximately two to five seconds, indicating module has been reset. If lamp fails to go out, repeat reset procedure. Turn ignition OFF.

6. Turn ignition to RUN and ensure emission maintenance lamp is lit for 2-5 seconds. Lamp should turn off after approximately 2-5 seconds.