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TEST 7A - Diagnosing External Temperature Sensor

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For appropriate wiring diagram, see WIRING DIAGRAMS .
  1. If compass/mini-trip screen displays "OC", go to step 5). If compass/mini-trip screen does not display "OC", turn ignition switch to OFF position. Disconnect external temperature sensor. See Fig 1. Check connector, and clean or repair connector as necessary. Turn ignition switch to ON position. If compass/mini-trip screen displays "OC", replace external temperature sensor. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS .
    Fig 1: Locating External Temperature Sensor
    G92D22734
  2. If compass/mini-trip screen does not display "OC", remove compass/mini-trip module. Check connector, and clean or repair connector as necessary. Turn ignition switch to OFF position. Put DRB-II in ohmmeter mode. Probe terminal No. 9 (Violet/Light Green wire) of compass/mini-trip module connector.
  3. If resistance is less than 5 ohms, repair short to ground in Violet/Light Green wire. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS . If resistance is more than 5 ohms, using a external ohmmeter, check resistance between terminals No. 9 (Violet/Light Green wire) and No. 10 (Black/Light Blue wire).
  4. If resistance is less than 5 ohms, repair Violet/Light Green for a short to Black/Light Blue wire. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS . If resistance is more than 5 ohms, replace compass/mini-trip module. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS .
  5. If compass/mini-trip screen displays "OC" in step 1), turn ignition switch to OFF position. Disconnect external temperature sensor. Check connector, and clean or repair connector as necessary. Connect a jumper wire between Violet/Light Green and Black Light Blue wires of external temperature sensor connector. Turn ignition switch to ON position.
  6. If compass/mini-trip screen displays "SC", replace external temperature sensor. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS . If compass/mini-trip screen does not display "SC", turn ignition switch to OFF position. Connect a jumper wire between Violet/Light Green and Black/Light Blue wires of external temperature sensor connector and ground.
  7. Disconnect compass/mini-trip module. Check connector condition and clean or repair connector as necessary. Put DRB-II in ohmmeter mode. Probe terminal No. 9 (Violet/Light Green wire) of compass/mini-trip module connector. If resistance is more than 5 ohms, repair open Violet/Light Green wire. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS .
  8. If resistance is less than 5 ohms, with jumper wire is still connected, probe terminal No. 10 (Black/Light Blue wire) of compass/mini-trip module connector. If resistance is more than 5 ohms, repair open Black/Light Blue wire. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS . If resistance is less than 5 ohms, replace compass/mini-trip module. Perform VERIFICATION TEST - VERIFICATION OF REPAIRS .
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