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Home >> Kia >> 2001 >> Sephia Base, Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - Fa4AEL >> Diagnostic Tests >> DTC P0758: Shift Solenoid "B" Electrical Fault >> Diagnostic Procedure

Diagnostic Procedure

  1. Ensure all appropriate connections are clean and tight. Repair as needed. If connections are okay, go to next step.
  2. Turn ignition switch to ON position. Access TCM connector. DO NOT disconnect connector. Using DVOM, measure voltage by backprobing between TCM harness connector terminal No. 33 and ground. See Figure. Road test vehicle so that shift solenoid "B" will be activated. Battery voltage should be present with shift solenoid "B" on (activated), and zero voltage with shift solenoid "B" off. If voltage is as specified, go to step  6. If voltage is not as specified, go to next step.
  3. Turn ignition switch to OFF position. Disconnect TCM connector. Using DVOM, measure resistance between ground and TCM harness connector terminal No. 33. If resistance is 14-18 ohms, go to step  6. If resistance is not 14-18 ohms, go to next step.
  4. Disconnect transaxle 9-pin connector. Using DVOM, measure resistance between terminal No. 4 and ground. See Figure. If resistance is 14-18 ohms, go to next step. If resistance is not 14-18 ohms, replace shift solenoid "B". See PRESSURE CONTROL, TCC & SHIFT SOLENOIDS  under REMOVAL & INSTALLATION.
  5. Check continuity of circuit between shift solenoid "B" and TCM. See WIRING DIAGRAMS . Repair as needed. If circuit is okay, go to next step.
  6. Reconnect all harness connectors. Clear DTC. Road test vehicle. Retrieve DTC. If DTC P0758 is still present, replace TCM. See TRANSAXLE CONTROL MODULE  under REMOVAL & INSTALLATION. If DTC P0758 is no longer present, malfunction is repaired.
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