Pinpoint Test AF: ONE OR MORE D2B MODULES NOT RESPONDING. PERMANENT SUPPLY FAULT

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 Jaguar S-Type, 2007 Jaguar S-Type, 2006 Jaguar S-Type, 2005 Jaguar S-Type, and 2004 Jaguar S-Type. However, it is still accessible from the selected car via links, so may be relevant.

CHECK THE PERMANENT SUPPLY TO THE CD CHANGER
Disconnect the CD changer electrical connector, CA267.

Measure the voltage between CA267, pin 2 (NG) and ground.

Is the voltage greater than 10 volts?

YES: Check the module for ground. INSTALL a new CD Changer. Refer to Audio Unit . CLEAR the DTC. TEST the system for normal operation.

NO: Repair the circuit between the CD changer electrical connector, CA267, pin 2, and fuse 29 of the rear power distribution box. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS article. CLEAR the DTC. TEST the system for normal operation.
CHECK THE PERMANENT SUPPLY TO THE VOICE ACTIVATED CONTROL MODULE
Disconnect the voice activated control module electrical connector, CA300.

Measure the voltage between CA300, pin 22 (NR) and ground.

Is the voltage greater than 10 volts?

YES: Go to step 1.

NO: Repair the circuit between the voice activated control module electrical connector, CA300, and pin 22, fuse 29 of the rear power distribution box. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS article. CLEAR the DTC. TEST the system for normal operation.
CHECK THE PERMANENT SUPPLY TO THE 'PHONE MODULE
Disconnect the 'phone module electrical connector, CA261.

Measure the voltage between CA261, pins 012(NW) and 13 (NR) and ground.

Is the voltage greater than 10 volts?

YES: Go to step 2.

NO: Repair the circuit between the 'phone module electrical connector, CA261, pins 012 and 13 and fuse 29 of the rear power distribution box. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS article. CLEAR the DTC. TEST the system for normal operation.
CHECK THE PERMANENT SUPPLY TO THE NAVIGATION COMPUTER
Disconnect the Navigation computer electrical connector, CA258.

Measure the voltage between CA258, pin 001 (NW) and ground.

Is the voltage greater than 10 volts?

YES: Go to step 3.

NO: Repair the circuit between the navigation computer electrical connector,CA258 , pin 001 and fuse 29 of the rear power distribution box. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS article. CLEAR the DTC. TEST the system for normal operation.
CHECK THE PERMANENT SUPPLY TO THE AMP
Disconnect the amp electrical connector, CA258.

Measure the voltage between CA263, pin 3 (NG) and pin 9 (NG) and ground.

Is the voltage greater than 10 volts?

YES: Go to step 4.

NO: Repair the circuit between the amp electrical connector,CA263, pin 3 (NG) and pin 9 (NG) and fuse 30 of the rear power distribution box. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS article. CLEAR the DTC. TEST the system for normal operation.