TM 5-3805-292-23
0006
ELECTRICAL TROUBLESHOOTING - EC004 ENGINE AIR INTAKE FILTER IS RESTRICTED
0006
Check air cleaner and hoses for
Clean or replace air cleaner or hoses
Restricted?
YES
restriction (WP 0058).
NO
Disconnect instrument panel (IP)
Disconnect air filter restriction
switch (WP 0137).
Check for continuity between air
Continuity
Perform Open Harness Test for circuit 266
filter restriction switch connector
NO
FEC6-1, circuit 266 (Y), harness
present?
side and IP connector C23-16,
circuit 266B (Y), harness side
Starting, & Charging System and
Frame 12. RH Console).
YES
Check for continuity between air
filter restriction switch connector
Continuity
Repair circuit 178 (B) or replace chassis
FE-C6, circuit 178C (B) harness
NO
side, and ground (WP 0175,
present?
wiring harness (WP 0146).
Frame 7. Engine, Starting, &
Charging System).
YES
Replace air filter restriction switch