B2613

CIRCUIT DESCRIPTION
The body control module (BCM) uses a varying voltage signal from the IP dimmer switch in order to determine the rate of pulse width modulation of the control circuit of the illumination lamps. The pulse width modulation rate determines the brightness of the illumination lamps.

CONDITIONS FOR RUNNING THE DTC
Voltage supplied to the module is in the normal operating range (approximately 10 - 16 volts).

CONDITIONS FOR SETTING THE DTC
^ The BCM detects one of the following conditions:
- A short to voltage in the 12-volt reference circuit of the IP dimmer switch.
- A short to voltage in the dimming circuit of the P dimmer switch.
- An open in the low reference circuit of the P dimmer switch.
^ The condition is present for longer than 1.0 second.

ACTION TAKEN WHEN THE DTC SETS
^ The BCM stores DTC 82613 in memory.
^ The illumination lamps remain at full brightness until the code is cleared.

CONDITIONS FOR CLEARING THE MIL/DTC
^ A current DTC 82613 clears when the BCM no longer detects one of the above conditions.
^ A history DTC B2613 clears after 100 consecutive ignition cycles.
^ The BCM receives the Clear Code commend from the scan tool.

DIAGNOSTIC AIDS
^ If the DTC 82613 is a history DTC, the fault may be intermittent. Refer to Testing for Intermittent and Poor Connections in Diagnostic Aids.
^ An intermittent condition in the following locations may cause an intermittent malfunction to occur:
- The 12-volt reference circuit of the IP dimmer switch, the signal circuit of the IP dimmer switch, or the low reference circuit of the P dimmer switch
- The IP dimmer switch
- The BCM

TEST

Steps 1-4:

Steps 5-12: