Amplifier: Service and Repair
WM 914419 Removing and installing loudspeaker amplifier
Tools
Technical values
Preliminary work
Remove the side-panel lining at rear right. -> 700319 Removing and installing side-panel lining for rear luggage compartment - section on "removing" 700319 Removing and installing rear luggage compartment side-trim panel
Removing loudspeaker amplifier
NOTICE
Voltage peaks
- Risk of damage to load or to the control unit
-> Remove the ignition key and switch off load before disconnecting or removing load.
Information
- The loudspeaker amplifier is located behind the right rear side-panel lining.
Information
If the amplifier is to be replaced, the coding must be read out using the PIWIS tester 9718 before removing the amplifier.
1. Release -arrow A- and remove -arrow B- connector from amplifier.
Removing connector from amplifier
2. Release -arrow C- and remove -arrow D- connector for optical waveguide.
3. Unscrew and remove the four fastening nuts.
Unscrewing fastening nuts
4. Lift amplifier up and out.
Installing loudspeaker amplifier
1. Position amplifier on retaining bracket and screw it down with the fastening nuts. => Tightening torque: 6 Nm (4.5 ftlb.)
Tightening fastening nuts
2. Insert the two optical waveguides -arrow A- until the locking lugs -arrow B- engage securely.
Plugging in connector for amplifier
3. Press connector into the loudspeaker amplifier -arrow C- and press in the locking element -arrow D- until it engages securely.
Subsequent work
1. Install the side-panel lining at rear right. -> 700319 Removing and installing side-panel lining for rear luggage compartment - section on "Installing" 700319 Removing and installing rear luggage compartment side-trim panel
2. If the loudspeaker amplifier was replaced, the coding values must be written using the PIWIS Tester 9718.
Programming loudspeaker amplifier
Reading out and writing loudspeaker amplifier
NOTICE
Voltage drop
- Risk of irreparable damage to control unit
- Risk of damage to control unit
- Fault entries in the control unit
- Coding in the control unit is aborted
- Malfunctions in control unit, even during programming
-> Prior to disconnecting the control unit, switch off the ignition and remove the ignition key.
-> Ensure that the power supply is not interrupted during programming.
-> Connect a battery charger with a current rating of at least => Nominal value: 40 A to the vehicle battery.
Information
Follow the instructions on the Tester.
Later versions of the software may display slightly different text or require a slightly different procedure. The instructions you receive from the tester itself take precedence over this description.
1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on the ignition and press >> to continue.
2. Select the vehicle type.
3. Using the >> key, move from Vehicle type to the list of Control units and perform the automatic control unit search.
4. SelectPCM using the cursor keys and press >>.
5. Select External BOSE amplifier with the cursor keys and press the >> key.
6. Select Coding using the cursor keys and press >>.
7. Select Read out coding (codings) with the cursor keys and press >>.
8. Replace loudspeaker amplifier. -> 914419 Removing and installing loudspeaker amplifier - section on "Removing and installing"
9. In the menu Write in coding >> , the data that was read out is installed.
Information
After replacing the loudspeaker amplifier, the new loudspeaker amplifier must also be programmed using the Control unit programming function.
The Control unit programming procedure must be carried out for vehicles for which this function is displayed on the Tester.
Start Control unit programming by pressing F8 , then follow the instructions on the Tester.
10.
11. Compare the coding with the vehicle equipment in the Coding function and change the coding if necessary.
12. Read out and erase fault memory.