Lexus NX: Hybrid System Indicator Malfunction
DESCRIPTION
A hybrid system indicator has been used on this vehicle. In this circuit, the combination meter assembly receives the eco-zone indicator level signal from the hybrid vehicle control ECU via CAN communication. The combination meter assembly controls the operation of the hybrid system indicator according to the eco-zone indicator level signal received from the hybrid vehicle control ECU via CAN communication.
WIRING DIAGRAM
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CAUTION / NOTICE / HINT
NOTICE:
When replacing the combination meter assembly, make sure to replace it with a new one.
PROCEDURE
| 1. | CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Check for DTCs.
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OK:
No DTCs are output.
| NG | .gif) | GO TO CAN COMMUNICATION SYSTEM |
|
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| 2. | PERFORM ACTIVE TEST USING TECHSTREAM (HV SYSTEM INDICATOR) |
(a) Using the Techstream, perform the Active Test.
Click here
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| HV System Indicator | Hybrid system indicator | OFF, MIN, -50, 0, 100, 200, 300, 400, MAX | - |
| Tester Display |
|---|
| HV System Indicator |
OK:
Hybrid system indicator indication is normal.
| NG | | REPLACE COMBINATION METER ASSEMBLY |
|
| 3. | READ VALUE USING TECHSTREAM (HV SYSTEM INDICATOR) |
(a) Using the Techstream, read the Data List.
Click here
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| HV System Indicator | Hybrid system indicator value | Min.: -512%, Max.: 511% | -512 to 511% | - |
| Tester Display |
|---|
| HV System Indicator |
OK:
Hybrid system indicator value displayed on the Techstream is almost the same as hybrid system indicator indication.
| NG | | GO TO HYBRID CONTROL SYSTEM |
|
| 4. | CHECK COMBINATION METER ASSEMBLY |
(a) Replace the combination meter assembly.
Click here
(b) Check that the operation of the hybrid system indicator returns to normal.
OK:
The operation of the hybrid system indicator returns to normal.
| OK | | END (COMBINATION METER ASSEMBLY IS DEFECTIVE) |
| NG | | REPLACE HYBRID VEHICLE CONTROL ECU |
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