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7.2 Cellular Telephone (CTEL)   >   26 Electrical Test Program - Audio Switchover Test

Test scope Test connection Test condition Nominal value Possible cause/Remedy 1.0 Audio switchover NAM programming             Ignition: ON Radio: ON CTEL: ON Known good service area. Verfiy NAM option programming (data step 8 of programming guide) Model 129=1110 Model 140=1100 Enter 611 Press SEND Radio mutes 1.1 Note: The radio will not mute during incoming calls unless Incoming Mute is activated in the second menu. 1.1 Control voltage A2/4 4 Disconnect 5-pole connector on back of radio. Enter 611 Press SEND < 1 V Nominal value OK: 1.2 Nominal value not OK: 1.3 1.2 Radio             Radio: ON CTEL: OFF Disconnect 5-pole connector on back of radio. Momentarily ground pin 4 on back of radio. Radio mutes and is indicated in radio display. Nominal value OK: 1.3 Nominal value not OK: Replace radio 1.3 Wiring A35 2 A2/4 4 Disconnect 5-pole connector on back of radio. Disconnect connector 2 from A35. < 1 Nominal value OK: 27 Nominal value not OK: Wiring