TM 10-3930-675-20-1
0016 00-8
INPUT AND OUTPUT SIGNALS FOR STEERING ECU (792) TROUBLESHOOTING - CONTINUED
0016 00
Table 12. Error Code 419 - 4WD Steering Selection Switch, Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 419 - 4WD Steering Selection Switch,
Circuit Failure - Continued
5. Check continuity between
connector X160 pin 14 and
connector X177 pin 14.
a. If continuity between pins,
repair or replace connectors
(WP 0111 00).
b. If continuity (short) to chassis,
repair or replace connectors
(WP 0111 00).
c. If continuity is present, notify
SRA.
6. Check continuity between
connector X177 pin 14 and
steering ECU (792) connector
pin 46.
a. If continuity between pins,
repair or replace connectors
(WP 0111 00).
b. If continuity (short) to chassis,
repair or replace connectors
(WP 0111 00).
c. If continuity is present, notify
SRA.
Table 13. Error Code 420 - Crab Steering Selection Switch, Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 420 - Crab Steering Selection Switch,
Circuit Failure
1. Check voltage at crab steering
selection switch connector 138
pin 5. Voltage should be 22-
26V.
If voltage is not as specified,
check wires 1529B, 1529C, and
1529D for damage. Repair or
replace connectors (WP 0111 00).
2. Check voltage at crab steering
selection switch connector 138
pin 1. Voltage should be 22-
26V with switch activated and
0V with switch not activated.
If voltage is not as specified,
replace crab steering selection
switch (WP 0131 00 and WP 0072
00).
3. Check continuity between crab
steering
selection
switch
connector 138 pin 1 and
connector X153 pin 15.
a. If continuity between pins,
repair or replace connectors
(WP 0111 00).
b. If continuity (short) to chassis,
repair or replace connectors
(WP 0111 00).
c. If continuity is present, notify
SRA.
4. Check continuity between
connector X153 pin 15 and
connector X160 pin 15.
a. If continuity between pins,
repair or replace connectors
(WP 0111 00).
b. If continuity (short) to chassis,
repair or replace connectors
(WP 0111 00).
c. If continuity is present, notify
SRA.
