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Code 54

  1. Turn ignition off. Remove motor relay connector. Inspect connector terminals for damage and repair if necessary. If connector terminals are okay, measure resistance between terminal No. 4 (White/Black wire), and ground. If resistance is .5-1.5 ohms, go to next step. If resistance is not .5-1.5 ohms, repair open or shorted short circuit between motor relay connector and hydraulic unit. If circuit is okay, replace hydraulic unit.
  2. Remove ECU connector. Using an ohmmeter, measure resistance between ECU connector terminal No. 7 and ground. If zero ohms is present, replace ECU. If resistance is not zero ohms, repair short circuit in wiring harness between motor relay and ECU connector.
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