B2563

B2563 - Power Sliding Door Switch Circuit High






For a complete wiring diagram, refer to.

• When Monitored: Whenever the cluster is awake.

• Set Condition: When the cluster senses voltage over 6 volts on the sliding doors overhead switch MUX circuit for longer than 10 seconds, this code will set.






Test Step 1 - DTC Present

• With the scan tool, record DTCs.

• Erase DTCs

• Turn the ignition OFF, wait 10 seconds, then turn the ignition ON.

• Operate the left power sliding door several times from the left power sliding door B - pillar switch.

• With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

• Go to Test Step 2 => [ Test Step 2 - Check Sliding Doors Overhead Switch MUX Circuit for
a Short to Voltage ]

No

• Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.

• Perform the Body Verification Test. Refer to => Non - DTC Based Diagnostics. Body Interior

Test Step 2 - Check Sliding Doors Overhead Switch MUX Circuit for a Short to Voltage






• Disconnect the switch - bank - No. 2 (PREMIUM) - 8 way harness connector.

• Turn the ignition ON.

• Measure the voltage between ground and the sliding doors overhead switch MUX circuit in the switch - bank - No. 2 (PREMIUM) - 8 way harness connector.

Is the voltage above 5.9 volts?

No

• Go to Test Step 3 => [ Test Step 3 - Check the Sliding Doors Overhead Switch MUX Circuit
for an Open ]

Yes

• Go to Test Step 4 => [ Test Step 4 - Check the Sliding Doors Overhead Switch MUX Wire for
a Short to Voltage ]

Test Step 3 - Check the Sliding Doors Overhead Switch MUX Circuit for an Open






• Turn the ignition OFF.

• Disconnect the instrument cluster C2 harness connector.

• Measure the resistance of the sliding doors overhead switch MUX circuit between the switch - bank - No. 2 (PREMIUM) - 8 way harness connector and the instrument cluster C2 connector.

Is the resistance below 5.0 ohms?

No

• Repair the sliding doors overhead switch MUX circuit for an open.

• Perform the Body Verification Test. Refer to => Non - DTC Based Diagnostics. Body Interior

Yes

• Replace the instrument cluster.

• Perform the Body Verification Test. Refer to => Non - DTC Based Diagnostics. Body Interior

Test Step 4 - Check the Sliding Doors Overhead Switch MUX Wire for a Short to Voltage






• Turn the ignition ON.

• Measure the voltage between ground and the sliding doors overhead switch MUX circuit in the switch - bank - No. 2 (PREMIUM) - 8 way harness connector.

Is there any voltage present?

Yes

• Repair the sliding doors overhead switch MUX circuit for a short to voltage.

• Perform the Body Verification Test. Refer to => Non - DTC Based Diagnostics. Body Interior

No

• Replace the instrument cluster.

• Perform the Body Verification Test. Refer to => Non - DTC Based Diagnostics. Body Interior