TM 5-3805-296-23-2
0100
Table 1. 0821 Display Power Supply Diagnostic Codes Continued.
0100
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
0821-04 Display Power
Supply Voltage Below
Normal Continued
Figure 4. Instrument Panel and Retaining Hardware.
0100
6. Disconnect connector P-C19
(WP 0012, Figure 270) from
speedometer/tachometer display
module.
7. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
8. At MSD, check for active
821-4 Display Power Supply Voltage
diagnostic code 821-4 Display
Below Normal Becomes Inactive
Power Supply Voltage Below
Replace speedometer/tachometer
Normal (WP 0008).
display module (WP 0506).
Proceed to Test Step 4.
821-4 Display Power Supply Voltage
Below Normal Remains Active
Proceed to Test Step 2.
Test Step 2. Check For Shorted Quad
Gauge Display Module.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Disconnect connector P-C13
(WP 0012, Figure 268) from quad
gauge display module.