TM 5-3805-298-23-1
0055
Table 1. 247 SAE J1939 Data Link Diagnostic Codes - Continued.
055
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 6. Test Engine Wiring
247-9 SAE J1939 Data Link
Harness for Short.
Abnormal Update Rate -
1. Remove right lower cab access
Continued
panels (WP 0347).
2. Disconnect connector EN-C8
(WP 0012, Figure 22) from
connector C-C19 (WP 0012,
Figure 23).
3. Disconnect connector EN-C5
(WP 0012, Figure 20) from CAN
data link 2 resistor (WP 0012,
Figure 21).
4. Using digital multimeter
Continuity - Replace engine wiring
(WP 0174), test for continuity
harness (WP 0299).
between connector EN-C1
Proceed to Test Step 8.
(WP 0012, Figure 11) terminal 20
No Continuity - Proceed to step 5.
and all other EN-C1 terminals, and
ground.
5. Using digital multimeter
Continuity - Replace engine wiring
(WP 0174), test for continuity
harness (WP 0299).
between connector EN-C1
Proceed to Test Step 7.
(WP 0012, Figure 11) terminal 21
No Continuity - Proceed to Test Step 7.
and all other EN-C1 terminals, and
ground.
Test Step 7. Test Lower Cab Wiring
Harness for Short.
1. Remove left lower cab access
panels (WP 0347).
2. Remove transmission ECM cover
(WP 0266).
3. Disconnect connector C-C13
(WP 0012, Figure 25) from
transmission ECM connector J2.
4. Remove instrument cluster for
access to wiring harness
connectors (WP 0252).
5. Disconnect connector C-C56
(WP 0012, Figure 46) from
instrument cluster (WP 0252).
6. Disconnect connector C-C55
(WP 0012, Figure 27) from CAN
data link 1 resistor (WP 0012,
Figure 28).
7. Disconnect MSD from data link
service connector, if connected
0055-5
