Lexus NX: How To Proceed With Troubleshooting
Lexus NX Service Manual / Steering / Steering Column / Heated Steering Wheel System / How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the heated steering wheel system.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | INSPECT AUXILIARY BATTERY |
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.
|
| 3. | PROBLEM SYMPTOMS TABLE |
| Result | Proceed to |
|---|---|
| Fault is not listed in problem symptoms table | A |
| Fault is listed in problem symptoms table | B |
| B | .gif) | GO TO STEP 5 |
|
| 4. | OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Terminals of ECU
Click here .gif)
|
| 5. | REPAIR OR REPLACE |
|
| 6. | CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of pr
Terminals Of Ecu
TERMINALS OF ECU HINT: Perform the inspection from the harness side with the connectors connected. STEERING HEATER AND VIBRATION ECU (a) Measure the voltage or resistance according to the value(s) in
Fail-safe Chart
FAIL-SAFE CHART MALFUNCTION DETECTION (a) Operation when malfunction is detected Content Operation Heater failure Overcurrent detection of drive element Heater output off Overheating
SEE MORE:
Lost Communication with EMV (B1321)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory B1321 Lost Communication with EMV
DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
Malfunction Status: Lost communication with radio receiver assembly
Malfunction Duration: 30 seconds
Actuator Malfunction (C13A7)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C13A7 Actuator Malfunction Both of following conditions are met:
Electric parking brake is operating
One of following is detected: Motor lock, gear lock, spinning, repeated slipping
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