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Malfunction In "G" Sensor Circuit

  1. Check service data for "G" sensor. See SERVICE DATA INSPECTION  under TESTING & DIAGNOSIS. If "G" sensor service data test okay, go to next step. If "G" sensor service data do not test okay, go to step 5).
  2. Select TOUR mode using ECS switch. Check service data indications for items No. 61, 62, 63 and 64 (actuator indicators). See SERVICE DATA INSPECTION . All service data indications should be SOFT.
  3. Remove "G" sensor. See "G" SENSOR under REMOVAL & INSTALLATION. Reconnect "G" sensor to harness connector. Turn ignition on. Slowly shake sensor up and down at about one cycle per second while observing Multi-Use Tester (MUT) service data indication for each actuator.
  4. Each actuator indication should be HARD while shaking "G" sensor and should switch back to SOFT when sensor is held stationary. If each actuator indication tests as specified, "G" sensor circuit is okay. If any actuator indications do not test as specified, replace ECS control unit.
  5. Disconnect "G" sensor connector. Turn ignition on. Using an ohmmeter, check for continuity between "G" sensor harness connector terminal No. 3 (Black wire) and ground. If continuity is present, go to next step. If continuity is not present, check harness, and repair if necessary. If harness is okay, replace ECS control unit.
  6. Using a voltmeter, measure voltage between "G" sensor harness connector terminal No. 1 (Green/Red wire) and ground. 5 volts should be present. If specified voltage is present, go to next step. If specified voltage is not present, check wiring harness. Repair harness as necessary. If harness is okay, replace ECS control unit.
  7. Turn ignition off. Check for continuity between "G" sensor harness connector terminal No. 2 (Green/Brown wire) and ECS control unit harness connector terminal No. 61 (Green/Brown wire). See Figure.
  8. If continuity is not present, repair harness. If continuity is present, install a known good "G" sensor, and recheck for a Code 11. If Code 11 is reset, replace ECS control unit. If Code 11 does not reset, replace "G" sensor.
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