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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSHONDA2020CIVIC SI, 4D SEDANREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSWINDOWS / GLASS - TESTING & TROUBLESHOOTINGCONNECTOR VIEWPOWER WINDOW MASTER SWITCH CONNECTOR FOR INPUTS AND OUTPUTS (2/4-DOOR)
2020 Honda Civic Si, 4D Sedan
Power Window Master Switch Connector for Inputs and Outputs (2/4-door)
2020 Honda Civic Si, 4D SedanSECTION Power Window Master Switch Connector for Inputs and Outputs (2/4-door)
| Terminal number | Terminal name | Description | Signal |
|---|---|---|---|
| 1 | P/W DR MTR DOWN | Drives driver's power window motor | With driver's power window motor DOWN operation: about battery voltage If none of above conditions are met: less than 0.2 V |
| 2 | P/W DR MTR UP | Drives driver's power window motor | With driver's power window motor UP operation: about battery voltage If none of above conditions are met: less than 0.2 V |
| 3 | GND | Ground for power window master switch | Less than 0.2 V at all times |
| 4 | +B P/W DR | Power source for door multiplex control unit | About battery voltage at all times |
| 5 | Not used | --- | --- |
| 6 | Not used | --- | --- |
| 7 | DR KEY CLY LOCK | Detects DR KEY CYL LOCK signal | With driver's door key cylinder switch UNLOCK: about battery voltage With driver's door key cylinder switch LOCK: less than 0.2 V |
| 8 | DR KEY CLY UNLOCK | Detects DR KEY CYL UNLOCK signal | With driver's door key cylinder switch LOCK: about battery voltage With driver's door key cylinder switch UNLOCK: less than 0.2 V |
| 9 | TRUNK OPEN SW(INTR) | Detects TRUNK OPEN SW (INTR) signal | With trunk lid opener switch ON: less than 0.2 V With trunk lid opener switch OFF: about battery voltage |
| 10 | MIRROR R COM | Detects MIRROR R COM signal | With vehicle in ON mode and power mirror DOWN or LEFT function: about battery voltage |
| 11 | MIRROR R LR | Detects MIRROR R LR signal | With vehicle in ON mode and power mirror DOWN or RIGHT function: about battery voltage |
| 12 | MIRROR UD | Detects MIRROR UD signal | With vehicle in ON mode and power mirror UP or LEFT function: about battery voltage |
| 13 *1 | P/W RR L SW RLY UP | Drives left rear power window motor | With left rear power window moving to UP using power window master switch: about battery voltage If none of above conditions are met: less than 0.2 V |
| 14 *1 | P/W RR L SW RLY DOWN | Drives left rear power window motor | With left rear power window moving to DOWN using power window master switch: about battery voltage If none of above conditions are met: less than 0.2 V |
| 15 *2 | H/MIRROR | Outputs H/MIRROR signal | With mirror defogger ON: about battery voltage |
| 16 | Not used | --- | --- |
| 17 | Not used | --- | --- |
| 18 | IG2 A/C | IG2 power source | With vehicle in ON mode: about battery voltage |
| 19 | Not used | --- | --- |
| 20 | DR SILCON UNLOCK | Detects DR SILCON UNLOCK signal | With driver's door lock knob switch LOCK: about battery voltage With driver's door lock knob switch UNLOCK: less than 0.2 V |
| 21 | DR SILCON LOCK | Detects DR SILCON LOCK signal | With driver's door lock knob switch UNLOCK: about battery voltage With driver's door lock knob switch LOCK: less than 0.2 V |
| 22 | Not used | --- | --- |
| 23 | Not used | --- | --- |
*1: 4-door
*2: With mirror defogger
| Terminal number | Terminal name | Description | Signal |
|---|---|---|---|
| 24 | Not used | --- | --- |
| 25 *1 | P/W RR R SW RLY DOWN | Drives right rear power window motor | With right rear power window moving to DOWN using power window master switch: about battery voltage If none of above conditions are met: less than 0.2 V |
| 26 *1 | P/W RR R SW RLY UP | Drives right rear power window motor | With right rear power window moving to UP using power window master switch: about battery voltage. If none of above conditions are met: less than 0.2 V |
| 27 | Not used | --- | --- |
| 28 | Not used | --- | --- |
| 29 | GND | Ground for power window master switch | Less than 0.2 V at all times |
| 30 | P/W SW ILLUMI | Outputs P/W SW ILLUMI signal | With combination light switch PARKING: about battery voltage With combination light switch OFF: less than 0.2 V |
| 31 | B-CAN_L | Communication line | --- |
| 32 | B-CAN_H | Communication line | --- |
| 33 | P/W DR MTR PLSA | P/W DR MTR PLSA signal | --- |
| 34 | P/W DR MTR VCC | Outputs P/W DR MTR VCC signal | With door multiplex control unit is wakeup mode: about battery voltage With door multiplex control unit is sleep mode: less than 0.2 V |
| 35 | P/W DR MTR PLSB | P/W DR MTR PLSB signal | --- |
| 36 | LIN(P/W) | Communication line | --- |
| 37 | +B BACK UP | Power source for power window master switch | About battery voltage at all times |
*1: 4-doorr
*2: With mirror defogger
RENDER: 1.0x
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.