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.
Terminals Of Ecu
- POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
- Disconnect the M1 switch connector.
- Measure the voltage and resistance of each terminal according to the value(s) in the table below.
Standard resistance
RESISTANCE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition E (M1-1) - Body ground W-B - Body ground Ground Always Below 1 Ω Standard voltage
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (M1-6) - E (M1-1) GR - W-B Power supply Power switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
- Reconnect the M1 switch connector and reset the power window motor.
- Measure the voltage according to the value (s) in the table below.
Standard voltage
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition DU (M1-3) - E (M1-1) G - W-B Power window motor UP output Power switch on (IG), driver side power window switch OFF → UP (Manual operation) 0V → 10 to 14 V DD (M1-4) - E (M1-1) BR - W-B Power window motor DOWN output Power switch on (IG), driver side power window switch OFF → DOWN (Manual operation) 0V → 10 to 14 V PU (M1-16) - E (M1-1) W - W-B Power window motor UP output Power switch on (IG), front passenger side power window switch OFF → UP (Manual operation) 0 V → 10 to 14 V PD (M1-15) - E (M1-1) R - W-B Power window motor DOWN output Power switch on (IG), front passenger side power window switch OFF → DOWN (Manual operation) 0 V → 10 to 14 V RLU (M1-12) - E (M1-1) L - W-B Power window motor UP output Power switch on (IG), rear LH side power window switch OFF → UP (Manual operation) 0 V → 10 to 14 V RLD (M1-13) - E (M1-1) B - W-B Power window motor DOWN output Power switch on (IG), rear LH side power window switch OFF → DOWN (Manual operation) 0 V → 10 to 14 V RRU (M1-10) - E (M1-1) Y - W-B Power window motor UP output Power switch on (IG), rear RH side power window switch OFF → UP (Manual operation) 0 V → 10 to 14 V RRD (M1-18) - E (M1-1) LG - W-B Power window motor DOWN output Power switch on (IG), rear RH side power window switch OFF → DOWN (Manual operation) 0V → 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
- CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (FRONT RH)
- Disconnect the H6 switch connector.
- Measure the voltage according to the value (s) in the table below.
Standard voltage
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (H6-3) - Body ground GR - Body ground Power supply Power switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
- Reconnect the H6 switch connector and reset the power window motor.
- Measure the voltage according to the value (s) in the table below.
Standard voltage
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition U (H6-4) - Body ground G - Body ground Power window motor UP output Power switch on (IG), front passenger side power window switch OFF → UP (Manual operation) 0 V → 10 to 14 V D (H6-1) - Body ground Y - Body ground Power window motor DOWN output Power switch on (IG), front passenger side power window switch OFF → DOWN (Manual operation) 0 V → 10 to 14 V If the result is not as specified, the power window regulator switch assembly may have a malfunction.
- CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (REAR LH)
- Disconnect the K1 switch connector.
- Measure the voltage according to the value (s) in the table below.
Standard voltage
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (K1-3) - Body ground R - Body ground Power supply Power switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
- Reconnect the K1 switch connector and reset the power window motor.
- Measure the voltage according to the value (s) in the table below.
Standard voltage
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition U (K1-4) - Body ground V - Body ground Power window motor UP output Power switch on (IG), front passenger side power window switch OFF → UP (Manual operation) 0 V → 10 to 14 V D (K1-1) - Body ground R - Body ground Power window motor DOWN output Power switch on (IG), front passenger side power window switch OFF → DOWN (Manual operation) 0 V → 10 to 14 V If the result is not as specified, the power window regulator switch assembly may have a malfunction.
- CHECK POWER WINDOW REGULATOR SWITCH ASSEMBLY (REAR RH)
- Disconnect the J1 switch connector.
- Measure the voltage according to the value (s) in the table below.
Standard voltage
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition B (J1-3) - Body ground R - Body ground Power supply Power switch on (IG) 10 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
- Reconnect the J1 switch connector and reset the power window motor.
- Measure the voltage according to the value (s) in the table below.
Standard voltage
VOLTAGE SPECIFICATIONSymbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition U (J1-4) - Body ground V-Body ground Power window motor UP output Power switch on (IG), front passenger side power window switch OFF → UP (Manual operation) 0 V → 10 to 14 V D (J1-1) - Body ground R - Body ground Power window motor DOWN output Power switch on (IG), front passenger side power window switch OFF → DOWN (Manual operation) 0 V → 10 to 14 V If the result is not as specified, the power window regulator switch assembly may have a malfunction.
NO RELATED
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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.