ITC2
CHASSIS
R402/ R407/ R422/ R435/ R452/ R457/ R472/ R488
Troubleshooting
3-11. Switch Unit Buttons – Troubleshooting flow
Switch Unit NOT FUNCTIONING
*VOLTAGE LEVEL FOR EACH PRESSED BUTTON
KEY
Voltage
(average)
Voltage range
NG
Check Wire Harness
And Connector
Connectivity?
Change Wire Harness
And connect properly
(average)
-
0.000
0.00000 – 0.82353
+
1.114
0.83451 – 1.37255
Check 3.3V
in Pin2, CN1
OK
NG
Check 3.3V in Pin 1,
CH/Input
1.693
1.383529 – 2.03137
No Input
2.420
2.04235 – 2.80000
in Pin2, CN1
(Switch Unit)
OK
OK
CN5000 on
BB Board
Change Switch Unit
NG
*Check
Pin 1 Voltage Level
in CN1
OK
Change BB Board
NG
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