Lexus NX: Suspension Control ECU Malfunction (C1781)
Lexus NX Service Manual / Suspension / Suspension Control / Adaptive Variable Suspension System / Suspension Control ECU Malfunction (C1781)
DESCRIPTION
If a malfunction in the absorber control ECU is detected, DTC C1781 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate |
|---|---|---|---|---|
| C1781 | Suspension Control ECU Malfunction | Either condition is met:
|
| Does not come on |
CAUTION / NOTICE / HINT
NOTICE:
- Before performing troubleshooting, inspect the connectors of related circuits.
-
If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first.
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-
Before replacing the absorber control ECU, perform all of the following again: 1) symptom simulation ; 2) DTC inspection ; and 3) Techstream inspection (ECU Data List or Active Test ). If no malfunctions are found in other areas, replace the absorber control ECU.
-
When the absorber control ECU is replaced, switch to test mode and check that all test mode DTCs are cleared when their respective deletion conditions are met.
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PROCEDURE
| 1. | CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Check for DTCs.
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| Result | Proceed to |
|---|---|
| CAN DTC is not output | A |
| CAN DTC is output | B |
| A | .gif) | REPLACE ABSORBER CONTROL ECU |
| B | | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
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