Checking Handset, Phone Module (PHM), Later Version

Checking handset




In case of lost function of the handset, this may be due to problems in the cable between Phone module (PHM) and handset.
- Ignition off.
Check the following cables for an open circuit:
Take readings between:
- Phone module (PHM) terminal #C1:19 (#19) and handset connector terminal #1 (#22) (microphone signal).
- Phone module (PHM) terminal #C1:20 (#20) and handset connector terminal #2 (#23) (loudspeaker signal).
- Phone module (PHM) terminal #C1:7 (#7) and handset connector terminal #5 (#26) (power supply).
- Phone module (PHM) terminal #C1:8 (#8) and handset connector terminal #3 (#24) (cradle signal).
- Phone module (PHM) terminal #C1:18 (#18) and handset connector terminal #4 (#25) (ground).
Try replacing the handset.
Remedy as necessary.

Other information
- Checking wiring and terminals Checking Wiring and Terminals
- Telephone handset Telephone Handset
- Phone Module (PHM) Phone Module (PHM)
- Signal specification Signal Description, Phone Module (PHM), Later Version
- Connecting the breakout box Connecting Breakout Box, Phone Module (PHM), Later Version









-------------------------------------------------