Pinpoint Test AH: ONE OR MORE D2B MODULES NOT RESPONDING. IGNITION SWITCHED 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 IGNITION SWITCHED SUPPLY TO THE VOICE ACTIVATED CONTROL MODULE
Disconnect the voice control module electrical connector, CA300.

Turn the ignition switch to the ON position.

Measure the voltage between CA300, pin 006 (WU) and ground.

Is the voltage greater than 10 volts?

YES: Check the module for ground. INSTALL a new voice activated control module. Refer to Multifunction Electronic Modules . CLEAR the DTC. TEST the system for normal operation.

NO: Repair the circuit between the voice activated control module electrical connector, CA300, pin 006 and the power distribution box fuse 29. CLEAR the DTC. TEST the system for normal operation.
CHECK THE IGNITION SWITCHED SUPPLY TO THE 'PHONE MODULE
Disconnect the 'phone module electrical connector, CA261.

Turn the ignition switch to the ON position.

Measure the voltage between CA261, pin 29 (WU) and ground.

Is the voltage greater than 10 volts?

YES: Check the module for ground. INSTALL a new 'phone module. Refer to Cellular Phone . CLEAR the DTC. TEST the system for normal operation.

NO: Repair the circuit between the 'phone module electrical connector, CA261, pin 29 and the power distribution box fuse 29. CLEAR the DTC. TEST the system for normal operation.