LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1997 >> Explorer 4D Utility, 5.0 P, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window System >> Testing >> One-Touch Down Feature Does Not Operate
April 5, 2026: LEMON Manuals is launched! Read the announcement.

One-Touch Down Feature Does Not Operate

NOTE: This test is associated with DTCs B1398, B1400 and B1342.
  1. Turn ignition switch to OFF position. Check one-touch down relay. See ONE-TOUCH DOWN RELAY under COMPONENT TESTING  . If one-touch down relay is okay, reconnect one-touch down relay and go to next step. If one-touch down relay does not test as specified, replace one-touch down relay. Clear DTCs and retest system.
  2. 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 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.
  3. Turn ignition switch to RUN position. Using NGS tester, access ACTIVE COMMAND MODES. Set active command ACCY RLY on. Read D_PWRLY PID. Toggle active command ONE TOUCH on and off. If D_PWRLY PID value agrees with command mode, go to step 7). If NGS tester indicates OFFO-G, go to next step. If NGS tester indicates ON-B-, go to step 6).
  4. Turn ignition switch to OFF position. Remove accessory delay relay and one-touch down relay from relay module located behind center of instrument panel. Measure resistance in Light Blue/Black wire between accessory delay relay socket and one-touch down relay socket. If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open in Light Blue/Black wire. Clear DTCs and retest system.
  5. Disconnect 18-pin GEM connector. Measure resistance in Yellow/Red wire between one-touch down relay socket and 18-pin GEM connector. If resistance is less than 5 ohms, replace GEM. If resistance is greater than 5 ohms, repair open in Yellow/Red wire. Clear DTCs and retest system.
  6. Turn ignition switch to OFF position. Remove one-touch down relay from relay module located behind center of instrument panel. Disconnect 18-pin GEM connector. Turn ignition switch to RUN position. Measure voltage at one-touch down relay socket Yellow/Red wire terminal. If voltage is present, repair short to power in Yellow/Red wire. If voltage is not present, replace GEM. Clear DTCs and retest system.
  7. Turn ignition switch to OFF position. Remove one-touch down relay from relay module located behind center of instrument panel. Turn ignition switch to RUN position. Measure voltage at one-touch down relay socket Light Blue/Black wire terminals. If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, repair Light Blue/Black wire. Clear DTCs and retest system.
  8. Disconnect 18-pin GEM connector. Disconnect left power window motor connector. See POWER WINDOW MOTOR  under REMOVAL & INSTALLATION. Measure resistance between 18-pin GEM connector Gray wire terminal and left power window motor connector Red wire terminal. If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open in Gray wire. Clear DTCs and retest system.
  9. Measure resistance between 18-pin GEM connector Orange/White wire terminal and left power window motor connector Red wire terminal. If resistance is less than 5 ohms, replace GEM. If resistance is greater than 5 ohms, repair open in Orange/White wire. Clear DTCs and retest system.
scientia non olet · About LEMON Manuals