Lexus NX: Assist Map Number Mismatch (C1582)
DESCRIPTION
When an incorrect hybrid vehicle control ECU, an incorrect Skid control ECU or an incorrect main body ECU is installed after the assist map has been written in the power steering ECU assembly, then DTC C1582 is stored because the data does not match the vehicle specifications.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Return-to-normal Condition |
|---|---|---|---|---|---|
| C1582 | Assist Map Number Mismatch | Assist map number mismatch |
| Off | Assist map written |
CAUTION / NOTICE / HINT
NOTICE:
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If the power steering ECU assembly has been replaced, perform assist map writing.
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If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.
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PROCEDURE
| 1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Check for DTCs.
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| CAN communication system DTC is output. | .gif) | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
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| 2. | CHECK RELATED PART |
(a) Check if any of the parts listed below have been replaced with an incorrect part in the past.
| Related Part | Hybrid vehicle control ECU |
| Main body ECU (multiplex network body ECU) | |
| Skid control ECU (brake booster with master cylinder assembly) |
NOTICE:
When removing a related part to check it, be sure to follow the appropriate procedures and precautions.
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Hybrid vehicle control ECU
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Main body ECU (multiplex network body ECU)
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Skid control ECU (brake booster with master cylinder assembly)
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HINT:
When DTC C1582 is output when parts have not been exchanged, replace the power steering ECU assembly as it may have an internal malfunction.
| All installed related parts have correct part number | | REPLACE POWER STEERING ECU ASSEMBLY |
| Part with incorrect part number is installed | | REPLACE RELATED PART WITH PART THAT HAS CORRECT PART NUMBER |
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Use the same procedure for the RH and LH sides.
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