Vibration Method
- If a malfunction occurs or becomes worse while driving on a rough road or when the engine is vibrating, perform following the steps
Note. There are several reasons why vehicle or engine vibration could cause an electrical malfunction. Some of the things to inspect for: Connectors not fully seated. Wiring harnesses not having full play. Wires laying across brackets or moving parts. Wires routed too close to hot parts. An improperly routed, improperly clamped, or loose wiring harness can cause wiring to become pinched between parts. The connector joints, points of vibration, and places where wiring harnesses pass through the firewall, body panels are the major areas to be inspected. Inspect for DTCs or malfunctions by slightly shaking wiring harnesses and connectors that are suspected of causing the malfunction.
Scheme 4
No. 4 ABNORMAL NOISE WHILE THE DOOR GLASS IS OPENING OR CLOSING POWER WINDOW SYSTEM (WITH EXTERIOR OPEN/CLOSE FUNCTION)
| 4 | Abnormal noise while the door glass is opening or closing |
|---|
| POSSIBLE CAUSE | Installation screw is loose between the door glass and carrier plate. Deformity in the power window regulator plastic part due to use. Scratching, wear marks to the power window regulator resin part due to twisting of the cable. Gear deformity in the power window motor. NOTE: Identify the location of the noise using a stethoscope or similar device. |
| NOTE |
|---|
| Identify the location of the noise using a stethoscope or similar device. |
| Noise type | Time of occurrence | Possible cause | Location of noise | Action |
|---|
| Clanking noise | Door glass begins to move | Insufficiently tightened installation screw between the door glass and carrier plate. | Between door glass lower edge and carrier plate. | Securely tighten the installation screw. |
| Groaning noise (Sound increases due to use) | While door glass is operating | Vibration caused by wear on the resin part from cable twisting due to use of the power window regulator. NOTE: Noise does not occur if a roller is equipped to power window regulator resin part. | Power window regulator | Replace the power window regulator (See POWER WINDOW REGULATOR REMOVAL/INSTALLATION .) |
| Whining noise | Gear inside power window motor is deformed due to use. | Gear in power window motor | Replace the power window motor (See POWER WINDOW MOTOR REMOVAL/INSTALLATION .) |
| Clicking noise (Periodic noise) |
| NOTE |
|---|
| Noise does not occur if a roller is equipped to power window regulator resin part. |
Scheme 5
