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TEST 6B - Diagnosing Blank Screen Compass/Mini-Trip Module

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For appropriate wiring diagram, see WIRING DIAGRAMS .
  1. Press step button one time. If compass/mini-trip screen is not blank, restart TEST 6A . If compass/mini-trip screen is still blank, gain access to compass/mini-trip module connector. Place DRB-II in voltmeter mode. Backprobe terminal No. 7 (Tan wire) of compass/mini-trip module connector.
  2. If voltage is less than 10 volts, go to step 4). If voltage is more than 10 volts, turn ignition switch to OFF position. Disconnect compass/mini-trip module connector. Check connector, and clean or repair connector as necessary. Put DRB-II in ohmmeter mode.
  3. Probe terminal No. 5 (Black/Light Green wire) of compass/mini-trip module connector. If resistance is more than 5 ohms, repair open Black/Light Green wire. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS . If resistance is less than 5 ohms, perform TEST 6C .
  4. If voltage is less than 10 volts in step 2), remove circuit breaker No. 25 from fuse panel. Probe Black/White wire (in fuse block) to circuit breaker No. 25. If voltage is more than 10 volts, go to step 7). If voltage is less than 10 volts, access ignition switch.
  5. Backprobe terminal No. 6 (Black/White wire) at ignition switch connector. If voltage is more than 10 volts, repair open in Black/White wire between ignition switch and fuse block. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS . If voltage is less than 10 volts, backprobe terminal No. 7 (Red wire) at ignition switch connector.
  6. If voltage is more than 10 volts, replace ignition switch. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS . If voltage is less than 10 volts, repair open Red wire. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS .
  7. If voltage is more than 10 volts in step 2), place DRB-II in ohmmeter mode. Probe Tan wire (in fuse block) to No. 25 circuit breaker. If resistance is less than 5 ohms, repair short to ground in Tan wire. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS . If resistance is more than 5 ohms, replace circuit breaker. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS .
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