B1637 – OBD-II DTC

OBD-II DTC B1637 – Mirror Driver Right Circuit Short To Battery

DTC B1637 meaning

DTC B1637 refers to a diagnostic trouble code indicating a short circuit in the right mirror driver circuit to battery voltage. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components and systems for faults. When the system detects that the right mirror driver circuit is receiving an unexpected voltage level, it triggers this code to alert the technician of a potential issue.

DTC B1637 symptoms

Common symptoms associated with DTC B1637 may include:

• Right side mirror not functioning or moving
• Mirror adjustment controls may be unresponsive
• Possible warning lights on the dashboard
• Inconsistent operation of other electrical components

DTC B1637 causes

Several factors can lead to the triggering of DTC B1637, including:

• Wiring issues such as frayed or damaged wires
• Corrosion or poor connections in the mirror driver circuit
• Faulty mirror motor or actuator
• Short circuit in the wiring harness
• Malfunctioning body control module (BCM)

DTC B1637 seriousness

The seriousness of DTC B1637 can vary. While it may not affect the vehicle’s overall drivability, it can lead to safety concerns if the right mirror is inoperable. Additionally, the presence of this code may indicate underlying electrical issues that could affect other systems in the vehicle. It is advisable to address this code promptly to ensure all vehicle components function correctly.

How to diagnose DTC B1637

To diagnose DTC B1637, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the wiring and connectors related to the right mirror driver circuit for any visible damage or corrosion.
3. Check for continuity in the wiring using a multimeter.
4. Test the mirror motor and actuator for proper operation.
5. Examine the body control module for any faults or issues.

How to fix DTC B1637 step-by-step instructions

To fix DTC B1637, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Inspect and repair any damaged wiring or connectors in the right mirror driver circuit.
3. Replace any corroded connectors to ensure a good electrical connection.
4. Test and, if necessary, replace the mirror motor or actuator.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the right mirror functionality to ensure the issue is resolved.

How to erase DTC B1637

To erase DTC B1637, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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