TM 5-3805-298-23-1
0086
Table 1. 271 Action Alarm Diagnostic Codes - Continued.
086
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 2. Test for Shorted Lower
271-3 Action Alarm Voltage
Cab Wiring Harness.
Is Above Normal -
1. Turn ignition switch and battery
Continued
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Remove instrument cluster for
access to wiring harness
connectors (WP 0252).
3. Disconnect connector C-C57
(WP 0012, Figure 61) from action
alarm.
4. Disconnect connector C-C56
(WP 0012, Figure 46) from
instrument cluster.
5. Using digital multimeter
Continuity - Replace lower cab wiring
(WP 0174), test for continuity
harness (WP 0291).
between connector C-C56
Proceed to Test Step 3.
(WP 0012, Figure 46) terminal 23
No Continuity - Replace transmission
and all other C-C56 terminals.
ECM (WP 0266).
Proceed to Test Step 3.
Test Step 3. Verify Malfunction Is
Resolved.
1. Ensure all wiring harness
connectors are connected.
2. Install instrument cluster
(WP 0252).
3. Using MSD, check for active
Diagnostic Code 271-3 Action Alarm
diagnostic codes (WP 0008).
Voltage Is Above Normal Becomes
Inactive - Troubleshooting complete.
Diagnostic Code 271-3 Action Alarm
Voltage Is Above Normal Remains
Active - Repeat troubleshooting from
the beginning.
0086-3
