TM 5-3805-298-23-1
0104
Table 1. 740 Differential Lock Solenoid Diagnostic Codes - Continued.
0104
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
4. Disconnect connector LE-C1
740-3 Differential Lock
(WP 0012, Figure 87) from
Solenoid Voltage Is Above
connector C-C10 (WP 0012,
Normal - Continued
Figure 86).
5. Using digital multimeter
Continuity - Replace front frame wiring
(WP 0174), test for continuity
harness (WP 0301).
between connector LE-C1
Proceed to Test Step 4.
(WP 0012, Figure 87) terminal 9
No Continuity - Proceed to Test
and all other LE-C1 terminals.
Step 3.
Test Step 3. Test for Shorted Lower
Cab Wiring Harness.
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 J2.
4. Using digital multimeter
Continuity - Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C13
Proceed to Test Step 4.
(WP 0012, Figure 25) terminal 5
No Continuity - Replace transmission
and all other C-C13 terminals.
ECM (WP 0266).
Proceed to Test Step 4.
Test Step 4. Verify Malfunction Is
Resolved.
1. Ensure all wiring harness
connectors are connected.
2. Install transmission ECM cover
(WP 0266).
3. Install right and left lower cab
access panels (WP 0347).
4. Using MSD, check for active
Diagnostic Code 740-3 Differential
diagnostic codes (WP 0008).
Lock Solenoid Voltage Is Above
Normal Becomes Inactive -
Troubleshooting complete.
Diagnostic Code 740-3 Differential
Lock Solenoid Voltage Is Above
Normal Remains Active - Repeat
troubleshooting from the beginning.
0104-3
