Checking the Handset

Checking the handset

Checking components and wiring
Check the cable between keypad unit / car-phone module terminal #A1 and handset terminal #E3. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between keypad unit / car-phone module terminal #A2 and handset terminal #E5. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between keypad unit / car-phone module terminal #A4 and handset terminal #E6 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between keypad unit / car-phone module terminal #A3 and handset terminal #E7 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between car-phone box terminal #C1 and keypad unit / car-phone module terminal #B1 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the cable between car-phone box terminal #C8 and keypad unit / car-phone module terminal #B8 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.
If no fault was found try a new handset.

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









Was a fault detected?

Yes - FAULT FOUND

No - No Fault Found

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