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Diagnosis Procedure
1.CHECK CONNECTOR
  1. Turn the ignition switch OFF.
  2. Disconnect the battery cable from the negative terminal.
  3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
    • Power steering control module
    • Harness connector B40
    • Harness connector E34
Is the inspection result normal?
.
Repair the terminal and connector.
 
2.CHECK HARNESS FOR OPEN CIRCUIT
  1. Disconnect the connector of power steering control module.
  2. Check the resistance between the power steering control module harness connector terminals.
    Power steering control module harness connectorResistance (Ω)
    Connector No.Terminal No.
    E3121Approx. 108 – 132
Is the measurement value within the specification?
.
Repair the power steering control module branch line.
 
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the power steering control module. Refer to Diagnosis Procedure.
Is the inspection result normal?
(Present error)Replace the power steering control module. Refer to Removal and Installation.
(Past error)Error was detected in the power steering control module branch line.
Repair the power supply and the ground circuit.