TM 9-2350-247-20-1
SERVICE AND/OR BLACKOUT STOPLIGHTS MALFUNCTION—Continued
0038 00
BY
1. Remove main harness circuit 22 plug (1) from jack (2) on
malfunctioning left tail light, or circuit 23 plug from jack on
malfunctioning right tail light.
2. Turn switch lever o n light switch to STOP LIGHT or to BO
MARKER.
3. Measure voltage between circuit 22 (left) plug (1) or circuit 23
(right) plug and ground with both steering levers locked in
parking brake position.
4. Does multimeter read less than 17 volts?
YES
NO
BYN
1. Install main harness jack on taillight.
2. Replace service stoplight or BO
stoplight bulb (WP 0278 00 or
WP 0280 00).
3. Verify no faults found.
2BY
1. Partially remove instrument panel (WP 0256 00).
2. Remove main harness plug (1) from light switch (2).
3. Measure resistance between light switch plug (1) pin C (3) to
circuit 22 jack (service stop) or pin N (4) to circuit 23 jack (BO
stop).
4. Does multimeter read 0 ohms?
YES
NO
2BYN
1. Install main harness on taillight.
2. Repair main harness circuit 22 or 23
(WP 0294 00).
3. Verify no faults found.
0038 00-3
