TM 5-3805-298-23-1
0109
Table 1. 1251 Alternator R - Terminal Diagnostic Codes - Continued.
0109
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 4. Test Lower Cab Wiring
1251-1 Alternator R Data
Harness for Short to ground.
Valid but Below Normal
1. Remove transmission ECM cover
Operational Range -
(WP 0266).
Continued
2. Disconnect connector C-C13
(WP 0012, Figure 25) from
Transmission ECM J2.
3. Using digital multimeter
Continuity Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C13
Proceed to Test Step 5.
(WP 0012, Figure 25) terminal 14
No Continuity Replace transmission
and ground.
ECM (WP 0266).
Proceed to Test Step 5.
Test Step 5. Verify Malfunction Is
Resolved.
1. Ensure all wiring harness
connectors are connected.
2. Install transmission ECM cover
(WP 0266).
3. Install left and right lower cab
access panels (WP 0347).
4. Start engine (TM 5-3805-298-10).
Diagnostic Code 1251-1 Alternator R
Using MSD, check for active
Data Valid but Below Normal
diagnostic codes (WP 0008).
Operational Range Becomes
Inactive Troubleshooting complete.
Diagnostic Code 1251-1 Alternator R
Data Valid but Below Normal
Operational Range Remains Active
Repeat troubleshooting from the
beginning.
0109-6
