TM 10-3930-675-24-1
ECU-TO-ECU COMMUNICATIONS TROUBLESHOOTING - CONTINUED
0014 00
Table 3. Error Code 106 - ECU (791) Not Responding Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 106 - ECU (791) Not Responding.
1. Check voltage (24V) at X161 a. If no voltage (24V) is found at
pin 6 with the ignition ON (WP
X161 pin 6, check continuity
0048 00-2).
of wire A1503A (WP 0048 00-
2).
b. Repair or replace damaged
wires or connectors (WP 0113
00).
2. Remove the cover from the a. If no voltage (24V) is found at
tophandler junction box.
X186 pin 1, check circuit
Check voltage (24V) between
breaker F40 located under the
X186 pin 1 and pin 2 and
auxiliary pump and continuity
between pin 1 and ground.
of cables RD, 1862, W28, and
Check circuit breaker F41 (1)
for trip (WP 0048 00-23).
0048 00-33).
b. Repair or replace damaged
connectors (WP 0113 00).
c. Replace damaged cable (WP
d. Reset or replace damaged or
faulty circuit breaker (WP
0074 00).
3. Check voltage (24V) at X180 a. If no voltage (24V) is found at
pin 6 with the ignition ON (WP
X180 pin 6, check continuity
0048 00-23).
of wire YE between X180 and
X185 and YE between X185
and X161 pin 6 (WP 0048 00-
23).
b. Replace damaged cable (WP
0220 00).
4. Unplug relay 315-1. Check a. If no voltage (24V) is found,
voltage (24V) between the two
check continuity of wire
pins of the connector with the
A1806 and the ground
ignition ON (WP 0048 00-23).
connection of wire A1806E at
37 - 55. For RESET/USMC
check continuity of wires
A1806, 194H, and A194J
(X194 pins H and J) and
ground connection of wire
00-23).
0014 00-3
