DTC U3006:16 [ELECTRIC POWER STEERING (EPS)]
id0602a1015500
Outline
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System malfunction location
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Ignition power supply
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Detection condition
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• Voltage of 8 V or less detected by EPS control module ignition voltage observation.
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Fail-safe
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• Refer to “Fail-safe Function Table”.(See DTC TABLE [ELECTRIC POWER STEERING (EPS) (E)].)
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Possible cause
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• Open circuit in EPS control module power supply circuit
• Open circuit in EPS control module ground circuit
• IG1 relay No.2 malfunction
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Diagnostic Procedure
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Step |
Inspection |
Results |
Action |
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1
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INSPECT BATTERY VOLTAGE
• Is the battery terminal voltage normal?
(See BATTERY INSPECTION [(E)].)
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Yes
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Make sure that battery terminal connection is okay.
Go to the next step.
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No
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Charge or replace the battery, then perform the repair completion verification.
(See BATTERY RECHARGING [(E)].)
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2
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INSPECT BATTERY GRAVITY
• Is the battery specific gravity as specified?
(See BATTERY INSPECTION [(E)].)
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Yes
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Go to the next step.
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No
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Replace the battery, then perform the repair completion verification.
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3
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INSPECT CHARGING SYSTEM
• Are the generator and drive belt tension normal?
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Yes
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Go to the next step.
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No
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Replace the generator and/or drive belt if necessary.
Perform the repair completion verification.
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4
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INSPECT IG1 RELAY No.2
• Inspect the IG1 relay No.2.
(See RELAY INSPECTION.)
• Is the relay normal?
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Yes
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Go to the next step.
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No
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Replace the IG1 relay No.2 and perform the repair completion verification.
(See RELAY LOCATION [(E)].)
)
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5
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INSPECT EPS CONTROL MODULE POWER SUPPLY CIRCUIT FOR OPEN OR SHORT CIRCUIT
• Inspect the power supply circuit for an open circuit and short to ground.
(See CIRCUIT INSPECTION.)
• Is the circuit normal?
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Yes
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Go to the next step.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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6
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INSPECT EPS CONTROL MODULE GROUND CIRCUIT FOR POOR GROUND OR OPEN CIRCUIT
• Inspect the applicable circuit for an open circuit.
(See CIRCUIT INSPECTION.)
• Is the circuit normal?
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Yes
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Go to the next step.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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Repair completion verification 1
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VERIFY DTC TROUBLESHOOTING COMPLETED
• Using the M-MDS, clear the DTC from the EPS control module.
(See CLEARING DTC.)
• Using the M-MDS, perform the EPS control module DTC inspection.
(See DTC INSPECTION.)
• Is the same Pending DTC present?
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Yes
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the EPS control module.
Go to the next step.
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No
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Go to the next step.
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Repair completion verification 2
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VERIFY NO DTC IS PRESENT
• Are any DTCs present?
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Yes
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Go to applicable DTC inspection.
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No
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DTC troubleshooting completed.
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