TM 9-2350-277-20-1
INSTRUMENT PANEL AND/OR TRANS CONTROLLER ILLUMINATION LIGHTS
MALFUNCTION—Continued
0038 00
BY
1. Remove malfunctioning bulb(s) from instrument panel
illumination light(s) and/or TRANS CONTROLLER indicator.
2. Check continuity between bulb center contact and bulb base.
3. Does multimeter read less than infinity?
YES
NO
BYN
1. Replace light bulb(s), as required
(WP 0388 00).
2. Verify no faults found.
B2Y
1. Does either instrument panel illumination light malfunction?
YES
NO
B2YN
1. Replace harness 12349813
(WP 0374 00).
2. Verify no faults found.
B3Y
1. Remove instrument panel for access (WP 0295 00).
2. Remove harness 12349881 plug (1) from LIGHTING CONTROL
switch jack (2).
3. Remove harness 12349881 circuit 40 plug (3) or (4) from failing
instrument panel light (5) or (6).
4. Measure resistance between harness 12349881 LIGHTING
CONTROL switch plug (1), pin B (7), and failing circuit 40 light
plug (3) or (4).
5. Does multimeter read 0 ohms?
YES
NO
B3YN
1. Install bulbs.
2. Faulty harness 12349881, circuit 40.
Beyond unit maintenance repair.
3. Notify supervisor.
0038 00-3
