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 Lower Cab Wiring
271-5 Action Alarm Current
Harness for High Resistance or
Below Normal - Continued
086
Open.
1. Turn ignition switch and battery
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. Connect jumper wire between
terminal 1 and terminal 2 of
connector C-C57 (WP 0012,
Figure 61).
6. Using digital multimeter
Resistance 5.0 Ohms or Less -
(WP 0174), measure resistance
Replace action alarm (WP 0255).
between connector C-C56
Proceed to Test Step 3.
(WP 0012, Figure 46) terminal 23
Resistance Greater Than 5.0 Ohms -
and terminal 2.
Replace lower cab wiring harness
(WP 0291).
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 271-5 Action Alarm
diagnostic codes (WP 0008).
Current Below Normal Becomes
Inactive - Troubleshooting complete.
Diagnostic Code 271-5 Action Alarm
Current Below Normal Remains
Active - Repeat troubleshooting from
the beginning.
0086-5
