TM 10-3930-675-24-1
ENGINE BATTERY VOLTAGE CIRCUITS TROUBLESHOOTING - CONTINUED
0025 00
Table 1. Error Code 1434 - Unswitched Battery
Supply Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Error Code 1434 - Unswitched Battery Supply
Circuit Failure - Continued.
Error code 1434 can be activated by turning off the
master switch when the ignition switch is on.
3. Inspect the OEM harness a. Clean and repair connector as
required (WP 0113 00).
connector and ECU pins for
damage, dirt, or corrosion. b. Replace damaged ECU (794)
(WP 0079 00).
Remove the engine cover (WP
0148 00). Disconnect the OEM
harness connector from ECU
(794) (WP 0079 00).
4. Check for voltage. Turn the a. If voltage (22V to 26V) is not
found at any one pin; check
ignition ON and check for
circuit breakers F4 and F5
voltage (22V to 26V) at the
(WP 0074 00).
OEM connector harness at pins
7, 8, 17, 18, and 28 (WP 0048 b. Replace non-operational
circuit breaker (WP 0074 00).
00-10).
5. Inspect connector X17 for Repair or replace damaged
damage. Access the cab connector (WP 0113 00).
distribution box in the panel
behind the operators seat. Pull
the box out and disconnect
connector X17.
6. Check continuity of wires 174,
If continuity not found at any one
175, 176, 177, and 179
wire, notify Sustainment
between X17 and the OEM
Maintenance to replace engine
harness connector (WP 0048
and transmission wiring harness.
00-10).
7. Check for voltage. Disconnect a. If voltage (22V-26V) not
found at any one pin, check
connector X17. Turn the
continuity of wires A174A,
ignition ON. Check voltage
A147B, A174C, A177A, and
(22V to 26V) at the mounted
A177B (WP 0048 00-10).
part of X17 at pins 4, 5, 6, 7,
b. Replace damaged or open
and 9 (WP 0048 00-10).
wire.
0025 00-2
