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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 75 (Diagnosis - VT25-E) >> Diagnostic Tests >> DTC P0966: TCC Pc Solenoid Low Current >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Saturn Vue and 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. With ignition on, engine running. Drive for a short distance. Using scan tool, monitor status of DTC P0966. Did last test fail? If so, go to next step. If not, problem is intermittent. See DIAGNOSTIC AIDS  .
  2. Disconnect transaxle 20-way harness connector. Connect test light between transaxle 20-way harness connector terminal No. 7 and battery voltage. Is test light on? If so, go to next step. If not, go to step  4
  3. Inspect TCC PC solenoid high circuit (418) for a short to ground. Repair as necessary. If okay, replace TCM. See TRANSAXLE CONTROL MODULE  under REMOVAL & INSTALLATION.
  4. Turn ignition on. Connect test light between transaxle 20-way harness connector terminal No. 7 and ground. Is test light on? If so, go to next step. If not, go to step  6 .
  5. Inspect TCC PC solenoid high circuit (418) for a short to voltage. Repair as necessary. If okay, replace TCM. See TRANSAXLE CONTROL MODULE  under REMOVAL & INSTALLATION.
  6. Inspect TCC PC solenoid high (418) and low (5500) circuits for a shorted together condition. Repair as necessary. If okay, replace TCC PC solenoid. See appropriate AUTOMATIC article in TRANSMISSION SERVICING.
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