B2417

DTC B2417 Daytime Running Lamps (DRL) Control Module Circuit Shorted To Ground/Open:

DTC B2417 Daytime Running Lamps (DRL) Control Module Circuit Shorted To Ground/Open (Part 1 Of 2):

DTC B2417 Daytime Running Lamps (DRL) Control Module Circuit Shorted To Ground/Open (Part 2 Of 2):

CIRCUIT DESCRIPTION
The Body Control Module (BCM) interfaces with the DRL control module through circuit 1970 to determine the ambient light operation mode. The BCM communicates this information to the Instrument Panel Cluster (IPC) through the Class II serial data link. Circuit 1970 also allows the BCM to turn on the headlamps for the twilight sentinel feature.

CONDITIONS FOR SETTING THE DTC
The BCM detects a short to ground or an open in circuit 1970 when turning the ignition switch from the START to the RUN position.

ACTION TAKEN WHEN THE DTC SETS
The BCM stores DTC B2417 in memory.

CONDITIONS FOR CLEARING THE DTC
^ When the ignition switch is turned from the LOCK or OFF position to the RUN position, a current DTC B2417 is always cleared. If a short to ground or open is still present when the ignition switch is rotated from the START position to the RUN position, DTC B2417 will reset as a current DTC.
^ A history DTC B2417 will clear after 100 consecutive ignition cycles if the condition for the fault is no longer present.
^ Using a scan tool.

DIAGNOSTIC AIDS
^ The following conditions may cause an intermittent malfunction to occur:
- An intermittent short to ground in circuit 1970.
- An intermittent open in circuit 1970.
- The DRL module is shorted to ground or open internally.
- The BCM is shorted to ground or open internally.
^ If the DTC is a history DTC, the problem may be intermittent. Try performing the tests shown while wiggling wiring and connectors, this can often cause the malfunction to reappear.
^ DTC P1626 will set in the Powertrain Control Module (PCM) when the ignition switch is in the RUN position with the BCM disconnected. When BCM diagnostics and repairs are completed, refer to the Engine Controls for additional information on PCM related DTCs. Powertrain Management

TEST DESCRIPTION
Numbers below refer to the step numbers on the diagnostic table.
2. Checks for voltage in circuit 1970.
3. Checks for a short to ground in circuit 1970.
4. Determines whether circuit 1970 has a short to ground or the DRL control module is faulty.
5. Checks for an open in circuit 1970.