199001058 - 5570TM RADIO SUPPLY CHECK

STEPCHECK TO BE PERFORMEDRESOLUTION IF THE CHECK IS NOT OK
1Check power supply (+30)- Check for battery voltage +30 across pin 4 of the radio connector A and earth- Check for battery voltage +15 across pin 7 of the radio connector A and earth- Check that the connector is correctly inserted in its other part- Try to move it from its seat by making small movements in all directions, grasping the connector body in your fingers and the wiring in your hand. The connector must stay in place- Exercise a moderate pulling force. The connector must stay in place- Check whether the power supply goes off, on and/or viceversa (touching/not touching)- Pull the lead and check the stability in the groove (should not move back): exercise repeated pull-push-pull cycles on the cable and check it remains immobileExamine the crimping:Use a lens to examine the terminal crimping area. The barrels must be turned symmetrically and no strands should emerge from the crimped area. The bare wire section under the barrels must emerge by 0.5.- Check the continuity of the +30 connection between Body Computer +30 connection and the radio    See E3510 RADIO - Restore the +15 power supply
2Check the earthDisconnect amplifier connector A and connect an ohmmeter accross pin 8 and earth and check the resistance is lower than 1 ohmRestore the earth connection
RADIO CONNECTOR PINOUT
CONNECTOR A
PinFunction
A1B CAN B
A2N.C.
A3B CAN A
A4Direct power supply
A5Positive signal for amplifier enablement (vers. Hi-Fi)
A6N.C.
A7N.C.
A8Earth
CONNECTOR B
PinFunction
B1Right rear speaker +
B2Right rear speaker -
B3Right front speaker +
B4Right front speaker -
B5Left front speaker +
B6Left front speaker -
B7Left rear speaker +
B8Left rear speaker -
CONNECTOR C/D/E
PinFunction
C1N.C.
C2N.C.
C3N.C.
C4N.C.
C5N.C.
C6N.C.
D7Audio in telephone +
D8Audio in telephone -
D9Phone mute
D10Steering wheel controls 1
D11Steering wheel controls 2
D12Earth for external connections
E13CDC data IN
E14CDC data OUT
E15Permanent power supply for CDC
E16Positive signal for CDC power supply enablement
E17CDC data GND
E18CDC audio GND
E19L input for CDC
E20R input for CDC