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 - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 106 - ECU (791) Not Responding -
b. If voltage (24V) is found,
Continued.
check relay 315-1 (WP 0113
00).
c. Repair or replace damaged
wires or connectors (WP 0113
00).
d. Replace damaged or faulty
relay (WP 0074 00 and WP
0222 00).
5. Unplug ECU (791) connector a. If no voltage (24V) is found at
1. Check voltage (24V) at pins
ECU (791) connector 1 pins 7
7 and 8 with the ignition ON
or 8, check circuit breaker F41
(WP 0048 00-23).
(1) (WP 0113 00) and
continuity of wires A51A,
A51B, and A51C (WP 0048
00-23).
b. Repair or replace damaged
wires or connectors (WP 0113
00).
c. Reset or replace damaged or
faulty circuit breaker (WP
0074 00).
6. Check voltage (24V) at pins 1 a. If no voltage (24V) is found at
and 15 with the ignition ON
ECU (791) connector 1 pins 1
(WP 0048 00-23).
or 15, check relays 3009-1 and
3009-2 (WP 0113 00) and
continuity of wires A51E,
A51F, and A51G (WP 0048
00-23).
b. Repair or replace damaged
wires or connectors (WP 0113
00).
c. Replace damaged or faulty
relay (WP 0074 00).
d. If voltage (24V) is found at all
ECU (791) connector 1 pin
checks, replace ECU 791 (WP
0080 00).
0014 00-4
