Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection Procedure
- CHECK FOR DTC
- Check for DTCs (See DTC CHECK/CLEAR
).
Result
DTC RESULT REFERENCEResult Proceed To DTC is not output A B2311 is output B B2312 is output c B2313 is output D LIN communication system DTCs are output E
B: GO TO DTC B2311 (See DTC B2311 )
C: GO TO DTC B2312 (See DTC B2312 )
D: GO TO DTC B2313 (See DTC B2313 )
E: GO TO LIN COMMUNICATION SYSTEM (See DIAGNOSTIC TROUBLE CODE CHART )
A: Go to Next Step
- Check for DTCs (See DTC CHECK/CLEAR
).
- CHECK MANUAL UP/DOWN FUNCTION
- Check that the driver side door power window moves when the manual up/down function of the multiplex network master switch is operated (See OPERATION CHECK
).
OK: Driver side door power window moves.
NG: OTHER PROBLEM (GO TO PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE ) )
OK: Go to Next Step
- Check that the driver side door power window moves when the manual up/down function of the multiplex network master switch is operated (See OPERATION CHECK
).
- READ VALUE USING TECHSTREAM (MULTIPLEX NETWORK MASTER SWITCH)
- Use the Data List to check if the master switch is functioning properly (See DATA LIST/ACTIVE TEST
).
Master Switch
MASTER SWITCH RANGE REFERENCETester Display Measurement Item/Range Normal Condition D Door P/W Auto SW Driver side power window auto up/down signal/ON or OFF ON: Driver side power window auto up/down switch operated
OFF: Driver side power window switch not operatedOK: The Techstream display changes according to operation of the master switch.
NG: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (See REMOVAL )
OK: REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (See REMOVAL )
- Use the Data List to check if the master switch is functioning properly (See DATA LIST/ACTIVE TEST
).
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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