Diagnosis; Operational Flowchart - Pioneer DEH-1300MP Service Manual

5

5. DIAGNOSIS

5.1 OPERATIONAL FLOWCHART

Power ON
VDD = 5 V
Pin 8
BSENS
Pin 36
ASENS
Pin 35
DSENS
Pin 34
Starts
communication
with Grille
microcomputer.
SWVDD <- H
Pin 1
Source keys
operative
Source ON
SYSPW <- H
Pin 15
Completes power-on operation.
(After that, proceed to each source operation)
5
6
BSENS = L
ASENS = L
DSENS = L
300 m
In case of the above signal, the communication
with Grille microcomputer may fail.
If the time interval is not 300 msec, the oscillator
may be defective.
DEH-1300MP/XNUC
6
7
300 m
7
8
A
B
C
D
E
F
19
8