TM 10-3930-675-24-1
ECU-TO-ECU COMMUNICATIONS TROUBLESHOOTING - CONTINUED
0014 00
Table 7. Error Code 110 - Communication Failure Between Display ECU (795) and Steering ECU (792)
Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 110 - Communication Failure 1. Enter "EXTRA FUNC" 9(13) Should have a "1" next to "RX
Between Display ECU (795) and Steering ECU
in the diagnostic menu.
792 STEERING".
(792).
If there is a "0", continue with
step 2.
2. Check steering ECU (792) Replace damaged terminal board
terminal board for loose or or tighten connections (WP 0080
damaged connections.
00).
3. Check ECU (792) pins 159 and Tighten loose connections.
160 for loose connection (WP
0048 00-16).
4. Inspect jumpers between a. If continuity is not present,
terminal connections at X179.
repair or replace damaged
Check continuity between
wires or connectors (WP 0113
(792) pin 159 and X179 pin L,
00).
and between (792) pin 160 and b. Replace missing or damaged
X179 pin H (WP 0048 00-3).
5. Check continuity between If continuity is not present, repair
X179 pin L and X177 pin 8, or replace damaged wires or
and between X179 pin H and connectors (WP 0113 00).
X177 pin 7 (WP 0048 00-3).
6. Check continuity between If continuity is not present, repair
X177 pin 8 and X160 pin 8, or replace damaged wires or
and between X177 pin 7 and connectors (WP 0113 00).
X160 pin 7 (WP 0048 00-3).
7. Check continuity between If continuity is not present, repair
X160 pin 8 and X152 pin 8, or replace damaged wires or
and between X160 pin 7 and connectors (WP 0113 00).
X152 pin 7 (WP 0048 00-3).
8. Access display ECU (795) a. If continuity is not present,
inside driver's control panel
repair or replace damaged
(WP 0081 00). Check
wires or connectors (WP 0113
continuity between (795) pin 6
00).
and X152 pin 7, and between b. If continuity is present, replace
(795) in 5 and X152 pin 8 (WP
ECU (792) (WP 0081 00).
0048 00-2).
c. Replace ECU (795) (WP 0081
00).
0014 00-8
