Lexus NX: ENG / EHV Device (C1A40)
DESCRIPTION
When a hybrid control system malfunction signal sent by the hybrid vehicle control ECU is detected by the clearance warning ECU assembly, DTC C1A40 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1A40 | ENG / EHV Device | When the power switch is on (IG), a hybrid control system malfunction signal is detected for 1 second or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
-
After the power switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
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When disconnecting and reconnecting the auxiliary battery
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HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
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-
After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).
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PROCEDURE
| 1. | CHECK FOR DTC |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
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HINT:
After turning the power switch from off to on (IG), wait 4 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs according to the screen on the Techstream.
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(c) Recheck for DTCs.
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HINT:
- DTC C1A40 is stored when a malfunction signal sent from the hybrid control system is detected.
- If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1A40 will not be output again.
-
If DTC C1A40 is output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.
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| Result | Proceed to |
|---|---|
| DTC C1A40 is output | A |
| DTC C1A40 is not output | B |
| A | .gif) | GO TO HYBRID CONTROL SYSTEM |
| B | | USE SIMULATION METHOD TO CHECK |
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Utility
UTILITY NOTICE: If any of the following parts has been replaced due to pre-collision system malfunction, those systems using those parts may be affected without performing necessary operations.
Forward recognition camera HINT: Forward recognition camera adjustment can be performed by using either
Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. TEMPORARILY INSTALL REAR TRAILING ARM ASSEMBLY LH (a) Temporarily install the rear trailing arm assembly LH to the rear suspension arm bracke
