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Home >> Saturn >> 1995 >> SW2 Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis >> Information Flag Charts >> Information Flag 76 - 4TH Gear Actuator Circuit Grounded/Open >> Diagnostic Procedure

Diagnostic Procedure

  1. Record malfunction history information. Clear DTCs and Information Flags. Start and test drive vehicle in 4th gear for 2 minutes or until Information Flag sets. If Information Flag 73 and 76 set, go to next step. If Information Flag 76 sets, go to step 3. If flag 76 does not set, problem is intermittent. Check all appropriate connections.
  2. Inspect TRS 3/4 fuse in underhood junction block. If fuse is okay, go to next step. If fuse is blown, inspect Light Green wire between TRS 3/4 fuse and 4th gear actuator for short to ground. Repair as needed. Replace fuse. If circuit is okay, go to step 5.
  3. Inspect Light Green wire between TRS 3/4 fuse and 4th gear actuator for open. Repair as needed. If circuit is okay, disconnect transaxle actuator connector. Measure resistance between terminals "C" and "D" on transaxle side of connector. If resistance is greater than 6 ohms, go to next step. If resistance is 6 ohms or less, inspect Purple wire between 4th gear actuator and PCM for open or short to ground. Repair as needed. If circuit is okay, replace PCM.
  4. Remove actuator connector plate. Using ohmmeter, measure resistance between 4th gear actuator terminals. If resistance is greater than 6 ohms, replace actuator. If resistance is 6 ohms or less, replace connector plate.
  5. Disconnect transaxle actuator connector. Measure resistance between terminals "A" and "B" on transaxle side of connector. If resistance is greater than 4 ohms, replace TRS 3/4 fuse. If resistance is 4 ohms or less, remove actuator connector plate. Using ohmmeter, measure resistance between 4th gear actuator terminals. If resistance is greater than 4 ohms, replace connector plate and TRS 3/4 fuse. If resistance is 4 ohms or less, replace actuator and TRS 3/4 fuse.
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