TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
Page 259 of 870
TM 9-2350-247-20-1 SERVICE STOPLIGHT DOES NOT WORK—Continued 0042 00 4Y 1. Partially remove instrument panel (WP 0256 00). 2. Disconnect main wiring harness plug (1) from light switch jack (2). 3. Measure resistance between light switch jack (2) pins F and A, F and B, and F and J with light switch in the STOP LIGHT and PANEL BRT positions. Multimeter should read continuity. 4. Measure resistance between light switch jack (2) pins F and C, F and D, F and E, F and H, F and K, F and L, F and M, and F and N with light switch in the STOP LIGHT and PANEL BRT positions. Multimeter should read infinity. 5. Are readings correct? YES NO 4YN 1. Replace light switch (WP 0262 00). 2. Verify no faults found. 5Y 1. Connect main wiring harness plug to light switch. 2. Install instrument panel (WP 0256 00). 3. Verify no faults found. 0042 00-3/4 blank