Operation CHARM: Car repair manuals for everyone.

Signal Too Low. Intermittent Fault






Signal too low. Intermittent fault

Checking contact resistance, oxidation and wiring
Check the car-phone box and keypad unit/car-phone module connectors for loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the wiring between the car-phone box #C9, #C10 and keypad unit/car-phone module #B9, #B10 for a short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Remedy as necessary.

Other information:
- To access/replace the car-phone box, see Car phone equipment Car Phone Equipment.
- To access/replace the keypad unit/car-phone control module, see Radio cassette player, replacing Radio Cassette Player, Replacing.
- To connect the breakout box, see Connecting the breakout box, Car phone module Connecting the Breakout Box.
- For information about signals and connectors, see Signal specification, Keypad unit / car-phone module (PHM) Signal Specification and Signal specification, Keypad unit / car-phone module (PHM) Signal Specification.









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