Code No.P1030:
Electrical parking lock motor relay stuck ON
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- If there is
any problem in the CAN bus lines, an incorrect diagnosis code may be stored. Prior to this diagnosis,
diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table
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- Whenever ECU is replaced, ensure that the CAN bus lines are normal.
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The PHEV-ECU stores this diagnosis code when the electric parking relay fails.
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- Damaged harness or connector
- Malfunction of CAN bus
- Malfunction of electrical parking relay
- Malfunction of electrical parking driver unit
- Malfunction of PHEV-ECU
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STEP 1. M.U.T.-III CAN bus diagnostics
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Use the M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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 Go to Step 2.
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 Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ).
On completion, go to Step 2.
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STEP 2. M.U.T.-III data list (Electrical parking driver unit)
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Check that the following data list display contents are normal (Refer to GROUP 22D - Data
List Reference Table ).
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Data list
- Item 8: Motor relay fail flag(Stuck ON)
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Check condition
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Normal condition
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The parking lock status
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Normal
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OFF
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Abnormal
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ON
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Q.
Is the check result normal?
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Go to Step 7.
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Go to Step 3.
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STEP 3. Check electrical parking relay.
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Refer to GROUP 22D - Electrical Parking Relay Check .
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Q.
Is the check result normal?
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Go to Step 4.
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Replace the electrical parking relay.
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STEP 4. Check the signal line for open circuit. (Electrical parking
driver unit and electrical parking relay).
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- Check the wiring harness electrical parking driver unit (BMB terminal) connector
and electrical parking relay connector terminal No. 1.
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Q.
Is the check result normal?
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Go to Step 5.
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Repair the connector or wiring harness.
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STEP 5. Check the power supply line for open circuit. (Electrical
parking driver actuator and electrical parking relay).
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- Check the wiring harness electrical parking driver actuator connector terminal
No.4 and electrical parking relay connector terminal No. 2.
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Q.
Is the check result normal?
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Go to Step 6.
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Repair the connector or wiring harness.
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STEP 6. Check whether the diagnosis code is stored again.
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Recheck if the diagnosis code is stored.
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(1)Erase the diagnosis code.
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(2)Turn on the power supply mode of the electric motor switch.
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(3)Check if the diagnosis code is stored.
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Q.
Is the diagnosis code stored?
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Replace the electrical parking driver unit (Refer to GROUP 22D - Electrical
Parking Drive Unit ).
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The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
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STEP 7. Check whether the diagnosis code is stored again.
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Recheck if the diagnosis code is stored.
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(1)Erase the diagnosis code.
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(2)Turn on the power supply mode of the electric motor switch.
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(3)Check if the diagnosis code is stored.
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Q.
Is the diagnosis code stored?
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Replace the PHEV-ECU (Refer to ).
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The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
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