XJ (X350) V8-4.2L (2005)
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5. Set the optical bus tester to ON.
6. Check for light pulses at the receiver pin of disconnected D2B connector TL95.
-
Are light pulses visible?
-> YES
GO to Pinpoint Test G239843t254.
-> NO
INSTALL a new instrument optical harness between CC21 and TL95. For additional information, refer to the electrical guide. CLEAR the DTC.
TEST the system for normal operation.
G239843t254 : CHECK THE AUDIO CONTROL MODULE
1. Connect the optical short link between the receiver and transmitter of the audio control module.
2. Turn the ignition switch to the ACC position.
3. Wait for 10 seconds.
4. Check for DTC.
-
Is U2603 logged?
-> YES
INSTALL a new audio control module, CLEAR the DTC. TEST the system for normal operation.
-> NO
Recheck DTCs. No fault found in D2B system.
Pinpoint Test G239843P31
PINPOINT TEST G239843p31 : CHECK THE SUPPLIES AND GROUNDS TO THE J-GATE MODULE (JGM)
G239843t101 : CHECK THE IGNITION SUPPLY TO THE JGM
1. Disconnect the JGM electrical connector, IP32.
2. Measure the voltage between IP32, pin 01 (GO) and GROUND.
-
Is the voltage less than 10 volts?
-> YES
REPAIR the circuit between the JGM and battery. This circuit includes the primary junction box (fuse 33) and the ignition switch. TEST the
system for normal operation.
-> NO
GO to Pinpoint Test G239843t102.
G239843t102 : CHECK THE GROUND TO THE JGM
1. Measure the resistance between IP32, pin 02 (B) and GROUND.
-
Is the resistance greater than 5 ohms?
-> YES
REPAIR the high resistance circuit. TEST the system for normal operation.
-> NO
CHECK for DTCs indicating a network or module fault. REFER to the DTC index.
Pinpoint Test G239843P32
PINPOINT TEST G239843p32 : CHECK THE SUPPLIES AND GROUNDS TO THE AIR CONDITIONING CONTROL MODULE
(A/CCM)
G239843t103 : CHECK THE IGNITION SUPPLY TO THE A/CCM
1. Disconnect the A/CCM electrical connector, CR119.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between CR119, pin 03 (WG) and GROUND.
-
Is the voltage less than 10 volts?
-> YES