TM 10-3930-675-24-1
STEERING ECU (792), TRANSMISSION ECU (793), AND ENGINE ECU (794)
TROUBLESHOOTING - CONTINUED
Table 1. Error Code 300 - Steering ECU (792) Hardware Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 300 - Steering ECU (792) Hardware 3. If circuit breaker F29 trips Perform appropriate
Failure - Continued.
during
operation,
check troubleshooting and repairs for
voltage output circuits from short circuit.
ECU (792) for short circuit,
brake cooling, auxiliary pump,
twistlock,
and
steering
indicator lights. (For USMC
Autolube system.) (ARMY
only 7208 and 7210 cab
proximity switches, filter
indicators.)
4. Check voltage (24V) at X174 a. If no voltage (24V) is found,
check circuit breaker F26 and
the ignition ON.
continuity of wires A48 (WP
b. Replace damaged or faulty
circuit breaker (WP 0074 00).
c. Repair or replace damaged
wires or connectors (WP 0113
00).
5. Check voltage (24V) at ECU a. If no voltage (24V) is found,
with the ignition ON.
A17414 and jumper wire 7923
b. Repair or replace damaged
wires or connectors (WP 0113
00).
6. Check voltage (24V) at ECU a. If no voltage (24V) is found,
with the ignition ON.
A17414 and jumper wire 7923
b. Repair or replace damaged
wires or connectors (WP 0113
00).
c. Replace ECU (792) (WP 0080
00).
0015 00-2