LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lincoln >> 1998 >> Navigator RWD >> Repair and Diagnosis >> Body & Frame >> Power Windows >> Symptom Tests >> Test D: One Touch Down Feature Does Not Operate
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test D: One Touch Down Feature Does Not Operate

NOTE: This test is associated with DTCs B1398, B1400, B1405, B1408, B1410 and B1342.
  1. Following manufacturer's instructions, retrieve continuous DTCs from GEM. Using NGS tester, perform ON-DEMAND self-test. If no DTCs are present, go to next step. If DTCs B1405 (self-test) and B1408 (self-test) and/or DTC B1410 (continuous and self-test) are present, go to TEST C: SINGLE WINDOW IS INOPERATIVE . If DTCs B1398 (continuous and self-test) and B1400 (continuous and self-test) are present, go to next step. If DTC B1342 is present, replace GEM. Clear DTCs and retest system.
  2. Turn ignition switch to RUN position. Using NGS tester, trigger active command ACCY RLY ON. Monitor GEM PID D_PWRLY while triggering active command ONE TOUCH DOWN ON and OFF. If D_PWRLY value agrees with command mode, go to TEST C:. If NGS tester indicates OFFO-G, go to next step. If NGS tester indicates ON-B-, go to step 6).
  3. Turn ignition switch to OFF position. Check one-touch down relay. See ACCESSORY DELAY, ONE-TOUCH DOWN & VENT WINDOW/MOONROOF RELAYS  under COMPONENT TESTS. If one-touch down relay is okay, go to next step. If one-touch down relay does not test as specified, replace one-touch down relay. Clear DTCs and retest system.
  4. Remove accessory delay relay from instrument panel fuse/relay block. Measure resistance between accessory delay relay socket terminal No. 87 and one-touch down relay socket terminal No. 85. See Figure. If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, replace instrument panel fuse/relay block. Clear DTCs and retest system.
  5. Disconnect 18-pin GEM connector from instrument panel fuse/relay block. Measure resistance between one-touch down relay terminal No. 86 and instrument panel fuse/relay block 18-pin GEM connector terminal No. 2. See Figure and Figure. Measure resistance between ground and instrument panel fuse/relay block 18-pin GEM connector terminal No. 2. If resistance is less than 5 ohms between one-touch down relay and instrument panel fuse/relay block 18-pin connector, and greater than 10 k/ohms between fuse/relay block connector, replace GEM. If resistance is not as specified, replace instrument panel fuse/relay block. Clear DTCs and retest system.
  6. Turn ignition switch to OFF position. Check one-touch down relay. See ACCESSORY DELAY, ONE-TOUCH DOWN & VENT WINDOW/MOONROOF RELAYS  under COMPONENT TESTS. If one-touch down relay is okay, go to next step. If one-touch down relay does not test as specified, replace one-touch down relay. Clear DTCs and retest system.
  7. Disconnect 18-pin GEM connector from instrument panel fuse/relay block. Turn ignition switch to RUN position. Measure voltage between ground and one-touch down relay socket terminal No. 86. See Figure. If voltage is present, replace instrument panel fuse/relay block. If voltage is not present, replace GEM. Clear DTCs and retest system.
scientia non olet · About LEMON Manuals