Pioneer AVIC-N4/XU/UC, Service Manual

Page: 83 / 296

AVIC-N4/XU/UC
83
5 6 7 8
5 6
7
8
C
D
F
A
B
E
type Execution address at the time of error occurrence.
ercd Contributing factor for the exceptions.
inf Task number where an exception error occurred.
(If it is “0”, it means that an error occurred in a non-task section)
ERROR-TIME Date & time of error occurrence
• When detailed information does not exist (in case of an error occurring somewhere else but in the C-source file):
4. Watch dog timer
This product has a built-in mechanism to monitor at a certain interval whether the software is correctly operating
or not.
Once this mechanism becomes inoperable, “reset request” will be sent to the power supply microprocessor when
a preset time (approximately 4 seconds) has elapsed.
In order to record operational situation of such an occasion, a special code which is not an error code is recorded
in the ERCD.
Test Screen
The vehicle speed pulse is displayed in a value equals to 1/5 of the frequency of the input vehicle speed signal.
Example: If the vehicle speed signal is 100Hz, the value will be 20.
Notwithstanding the above, the displayed value may vary depending on the model.
* How to operate
Display Content of inspection
Reverse Reverse port status
Parking Parking port status
Pulse Pulse status
[BACK] Return to the test mode menu.
[NAVI] Update of the port status
8. Port status information