TM 10-3930-675-20-1
0012 00-8
ELECTRONIC CONTROL UNIT (ECU) INPUT VOLTAGE TROUBLESHOOTING - CONTINUED
0012 00
NOTE
Tophandler ECU (791) has detected a 10V reference voltage out of range (9.3-10.4V).
Table 6. Error Code 203 - 10V Reference Voltage for Tophandler ECU (791) Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 203 - 10V Reference Voltage for
Tophandler ECU (791) Failure
1. Ensure that emergency stop
switch is not activated.
Release emergency stop switch
as required (TM 10-3930-675-
10).
2. Remove tophandler junction
box cover and ensure that
circuit breaker 51-F41 is not
tripped.
Reset circuit breaker as required
(WP 0076 000).
3. Disconnect tophandler angle
sensor at connector X180 pins
10 and 12.
4. Enter the “DIAG Attachment
1 (16)” menu and check
voltage of 10V REF OUT.
Voltage should be 9.3-10.4V.
If voltage is not as specified,
notify SRA.
5. Check wires to tophandler
angle sensor.
Replace sensor if wires are
damaged (WP 0100 00).
