TM 5-2420-231-23-1
0026
Table 1. Air Filter Restriction Indicator Fault - Continued.
026
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Air Filter Restriction
Test Step 5. Check for Shorted Main
Indicator Fault - Continued
Chassis Wiring Harness.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Remove front instrument panel
right-side cover (WP 0176).
3. Disconnect side console wiring
harness connector (WP 0007,
Figure 24) from main chassis wir-
ing harness connector (WP 0007,
Figure 25).
4. Using a digital multimeter, test for
Continuity - Replace main chassis
continuity between main chassis
wiring harness (WP 0154).
wiring harness connector (WP
Connect air filter restriction switch
0007, Figure 25) terminal 1L and
(WP 0007, Figure 38).
machine ground. There should be
Install instrument cluster (WP 0177).
no continuity.
Proceed to Test Step 10.
No Continuity - Replace side console
wiring harness (WP 0170).
Connect air filter restriction switch
(WP 0007, Figure 38).
Proceed to Test Step 10.
Test Step 6. Check for Faulty
Instrument Cluster Indicator.
1. Remove two screws (Figure 3,
Item 2) from instrument panel clus-
ter (Figure 3, Item 1), pull instru-
ment panel cluster (Figure 3,
Item 1) from bezel (Figure 3,
Item 3), and disconnect side con-
sole wiring harness connector
(Figure 3, Item 4) (WP 0007, Fig-
ure 28) from instrument panel clus-
ter (Figure 3, Item 1) (WP 0007,
Figure 29) (WP 0177).
2. Using a digital multimeter, mea-
Resistance 12 to 15 Ohms - Proceed
sure resistance between instru-
to Test Step 7.
ment cluster (WP 0007, Figure 29)
Resistance Greater Than 15 Ohms -
terminals 1 and 3. Resistance
Replace air filter restriction indicator
should be 12 to 15 ohms.
bulb on instrument cluster (WP 0177).
Proceed to Test Step 9.
Test Step 7. Check for Open Main
Chassis Wiring Harness.
1. Install a jumper wire between side
console wiring harness connector
(WP 0007, Figure 28) pins 3 and
36.
0026-7