TM 10-3930-675-24-1
INPUT AND OUTPUT SIGNALS FOR STEERING ECU (792) TROUBLESHOOTING - CONTINUED
0017 00
Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Error Code 423 - Ether Start Switch, Circuit
Failure.
Error code 423 is an information type error code. It
may not activate for the operator. Enter DIAG STEER-
ING 2(16) in the Diagnostic menu to verify the code or
enable the information type codes in the initialization
menu. Input error type codes can be activated if the
voltage input is not stable due to a bad connection.
1. Inspect the ether start switch Replace damaged ether start
for damage and connection.
switch (WP 0073 00).
2. Inspect connectors X174, X47, a. Repair or replace damaged
and X67 for connection or
connector (WP 0113 00).
damage.
b. If connectors are found to be in
good condition, check wires
674, A479, and d479 (WP
3. Check ECU (792) pin 42 for a. Check wire A17415 for
continuity (WP 0048 00-18).
connection or damage (WP
b. Replace damaged ECU (792)
0048 00-18).
terminal board (WP 0080 00).
c. Replace or repair open or
damaged wire (WP 0113 00).
4. Check for wire connection.
Replace ECU (792) (WP 0080
Disconnect wire A17415 from
00) if error code 423 is still
ECU (792) and recheck for
active.
active 423 error code.
0017 00-20
