Mercury 90-863160

DUAL POWER TRIM SYSTEM SERVICE MANUAL NUMBER 28
Page 5C-4 90-863160 MAY 2000
Trailer Switch Test
CAUTION
Remove fuse from RED/PURPLE harness lead before proceeding with test.
1. Set the ohmmeter on the Rx1 scale.
2. Push down on the “Trailer” switch and check for continuity between terminals 10 and 3.
• Continuity indicated, proceed to step 3.
• No continuity indicated, replace the switch.
3. Push up on the trailer switch and check for continuity between terminals 2 and 12.
• Continuity indicated, switch OK.
• No continuity indicated, replace the switch.
Starboard Trim Switch Test
1. Set ohmmeter on Rx1 scale.
2. Push down on STARBOARD TRIM switch and check for continuity between terminals
1 and 9.
• Continuity indicated, proceed to step 3.
• No continuity indicated, replace switch.
3. Push up on STARBOARD TRIM switch and check for continuity between terminals 11
and 6.
• Continuity indicated, switch OK.
• No continuity indicated, replace switch.
Port Trim Switch Test
1. Set ohmmeter on Rx1 scale.
2. Push down on PORT TRIM switch and check for continuity between terminals 2 and 13.
• Continuity indicated, proceed to step 3.
• No continuity indicted, replace switch.
3. Push up on PORT TRIM switch and check for continuity between terminals 14 and 7.
• Continuity indicated, switch OK.
• No continuity indicated, replace switch.