Check power supply (+15)

• With the ignition ON, check that the correct battery voltage is present between pins 4 and 8 of the 8-way Connect connector and earth.

• Check the connector is correctly inserted in the other part.

• Try to move it from its seat by shifting it by a small amount in all directions, holding the connector case in your fingers and the wiring in your hand. The connector should remain in place

• Apply a moderate pulling force. The connector should remain in place

• check whether the power supply turns off, turns on and/or vice versa (touching/not touching)

• subject the cable to a pulling force and check cable stability (no shrinkage): apply repeated pull-push-pull cycles to the cable and check it remains immobile.

Examine the crimping:

• Use a magnifying glass to examine the terminal criming area. The barrels must be turned symmetrically and three-stranded sections should not emerge from the criming area. The area of bare wire beneath the barrel must emerge by approximately 0.5 mm

• Replace the 7.5A fuse F 49 located in the CPL, after identifying the cause

• Restore the wiring if defective

Check earth

Disconnect 8-way connector A and connect an ohmmeter accross pin 8 and earth and check the resistance is lower than 1 ohm

Check power supply +30

• Check that the correct battery voltage is present between pins 7 and 8 of the 8-way Connect connector and earth.

• Check the wiring continuity

• Replace the 15A fuse F 23 located in the CVM, after identifying the cause

• Restore the wiring if defective

Check fuse

• Check the condition of the fuse located at the back of the Connect.

• If burnt out, search for the cause of the problem and replace it.

Check action of protection

• Disconnect Connector 8-way connector B. Turn the Connect off and on. Check whether one of the components (CD Changer, amplifier, sound boxes, etc.) is causing the radio fuse to blow.

• Replace defective speakers

• Replace the defective amplifier

Op. 5570T36 AMPLIFIER FOR SPEAKER SYSTEM - R+R

• Replace the CD Changer

Op. 5570T85

• If none of the above steps has highlighted problems with the signals and the Connect continues not to switch on then it is defective.