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Test C: All Power Windows Are Inoperative

  1. Check Power Supply To Master Switch  - Turn ignition off. Disconnect master window switch 4-pin connector C521. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and master window switch 4-pin connector C521 terminal No. 4 (Tan/Yellow wire). If battery voltage is present, go to next step. If battery voltage is not present, go to step 3).
  2. Check Black Wire For Open  - Turn ignition off. Disconnect master window switch 5-pin connector C522. Using an ohmmeter, check resistance between ground and master window switch 5-pin connector C522 terminal No. 5 (Black wire). If resistance is 5 ohms or less, replace master window switch and retest system operation. If resistance is more than 5 ohms, repair open in Black wire and retest system.
  3. Check Sliding Roof Panel Operation  - Turn ignition switch to RUN position. Operate sliding roof panel. If sliding roof panel does not operate, go to next step. If sliding roof panel operates, go to step 5).
  4. Check Black/Yellow Wire For Open  - Turn ignition off. Disconnect SCIL module 26-pin connector C288. Disconnect delayed accessory relays No. 1 and 2 (located behind left side of instrument panel). Using an ohmmeter, check resistance in Black/Yellow wire between 26-pin SCIL connector C288 terminal No. 13 and delayed accessory relay No. 2 connector terminal No. 86. See Figure and Fig 1 . If resistance is 5 ohms or less, replace SCIL module and retest system operation. If resistance is more than 5 ohms, repair open in Black/Yellow wire and retest system operation.
  5. Check Input To Delayed Accessory Relay  - Turn ignition off. Disconnect delayed accessory relay No. 2 (located behind left side of instrument panel). Turn ignition switch to RUN position. Using NGS tester, access SCIL module active command one-touch window down and ACCY delay. Trigger ACCY RLY ON. Using an ohmmeter, check resistance between ground and delayed accessory relay No. 2 connector terminal No. 86 (Black/Yellow wire). See Fig 1 . If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Black/Yellow wire and retest system operation.
  6. Check White/Yellow Wire For Open  - Using a voltmeter, check voltage between ground and delayed accessory relay No. 2 connector terminals No. 30 and 85 (White/Yellow wires). See Fig 1 . If battery voltage is present at both terminals, go to next step. If battery voltage is not present at both terminals, repair open in White/Yellow wire(s) and retest system operation.
  7. Check Tan/Yellow Wire For Short To Ground  - Using an ohmmeter, check resistance between ground and delayed accessory relay No. 2 connector terminal No. 87 (Tan/Yellow wire). See Fig 1 . If resistance is 10 k/ohms or less, go to next step. If resistance is more than 10 k/ohms, go to step 11).
  8. Check DDM For Short To Ground  - Disconnect DDM 4-pin connector C457 (located in top front corner of driver's door). Using an ohmmeter, check resistance between ground and delayed accessory relay No. 2 connector terminal No. 87 (Tan/Yellow wire). If resistance is 10 k/ohms or less, go to next step. If resistance is more than 10 k/ohms, replace driver door module and retest system operation.
  9. Check Master Window Switch For Short To Ground  - Disconnect master window switch 4-pin connector C521. Using an ohmmeter, check resistance between ground and delayed accessory relay No. 2 connector terminal No. 87 (Tan/Yellow wire). See Fig 1 . If resistance is 10 k/ohms or less, go to next step. If resistance is more than 10 k/ohms, replace master window switch and retest system operation.
  10. Check Passenger Window Switch For Short To Ground  - Disconnect passenger window switch connector C602. Using an ohmmeter, check resistance between ground and delayed accessory relay No. 2 connector terminal No. 87 (Tan/Yellow wire). If resistance is 10 k/ohms or less, go to next step. If resistance is more than 10 k/ohms, replace passenger window switch and retest system operation.
  11. Check Tan/Yellow Wire For Open  - Using an ohmmeter, check resistance in Tan/Yellow wire between delayed accessory relay No. 2 connector terminal No. 87 and master window switch 4-pin connector C521. If resistance is 5 ohms or less, replace delayed accessory relay No. 2 and retest system operation. If resistance is more than 5 ohms, repair open in Tan/Yellow wire and retest system operation.
Fig 1: Delayed Accessory Relays No. 1 & 2 Connector Terminals
G96A01170Courtesy of FORD MOTOR CO.
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