P1763 – Lock-Up Solenoid Electrical (Toyota)

Description

The ECM detected an electrical malfunction in the lock-up solenoid circuit.

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Symptoms

  • Shuddering
  • Slipping
  • Harsh shifting
  • Failsafe mode
  • Check engine light

Causes

  • Open or shorted wiring
  • Faulty solenoid
  • Connector corrosion
  • TCM driver fault

Diagnosis

  • Test solenoid resistance
  • Inspect wiring
  • Check connectors
  • Scan TCM data

Repair

  • Replace solenoid
  • Repair wiring
  • Clean connectors
  • Replace TCM if needed

Related Problems

Related Fault Codes