Diagnosis; Operational Flow Chart - Pioneer DEH-2050MP/XN/ES Service Manual

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5. DIAGNOSIS

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5.1 OPERATIONAL FLOW CHART

3 7 63 1515 0
A
Power ON
VDD
Pin 8
B
bsens
Pin 36
bsens = L
asens
Pin 35
asens = L
C
TE
L 13942296513
SWVDD
Pin 1
Source keys
operative
D
Source ON
SYSPW H
Pin 15
E
Completes power-on operation.(After that, proceed to each source operation.)
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F
16
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2
Starts communication with Grille microcomputer.
300 ms
H
300 ms
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.
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DEH-2050MP/XN/ES
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4
2 9 9 4
8
1 3 1 5 0 5 8 2 9
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4
2 8
9 9
9 4 2 8 9 9