• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
LED Indicator Dimming Supply | B2625 00 | B2625 00 | B2625 00 | -- |
When the interior lamps dimming switch is activated, a variable voltage signal is applied through the instrument panel lamps dimmer switch signal circuit to the body control module (BCM). The BCM then applies a variable voltage signal through the LED indicator dimming supply circuit to the components on the circuit.
The ignition is ON.
The BCM receives a ground signal on the LED indicator dimming supply circuit.
The BCM cease attempt to dim or illuminate the LED indicator lamps.
• | The conditions for setting the DTC are no longer present. |
• | A history DTC clears after 100 malfunction-free ignition cycles. |
• | The BCM receives the clear code command from the scan tool. |
Interior Lights Dimming Schematics
Lighting Systems Connector End Views
• | Circuit Testing |
• | Wiring Repairs |
Ignition ON, headlamp switch to PARK, vary the interior lamp dimming switch from dim to full bright. The LED lamps should dim and then become full bright.
⇒ | If the DTC resets, test for a short to voltage, short to ground, or an open in the LED indicator dimming supply voltage circuit. If the circuit/connections test normal, replace the BCM, driver door switch, and passenger door switch as applicable. |
⇒ | If the DTC resets, replace that particular component. |
⇒ | If the DTC does not reset, replace the BCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Refer to the appropriate replacement procedure for the component causing the condition. |
• | Control Module References for BCM replacement, setup, and programming |