2012 Jeep Wrangler JK Factory Service Manual 28 - DTC-Based Diagnostics

B1613-PANEL ILLUMINATION CONTROL CIRCUIT LOW

B1613-PANEL ILLUMINATION CONTROL CIRCUIT LOW

For a complete wiring diagram, refer to the Wiring Information.



Possible Causes

(E12) PANEL LAMPS DRIVER CIRCUIT SHORTED TO GROUND
DIMMED COMPONENT SHORTED TO GROUND
CLUSTER

1. CHECK FOR AN ACTIVE DTC


1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Activate the Panel Illumination.
4. Wait 30 seconds.
5. With the scan tool, read DTCs.


Does the scan tool display this DTC as active?

Yes


No


2. CHECK EACH NON-FUNCTIONING COMPONENT FOR AN INTERNAL SHORT TO GROUND




NOTE: Using the wiring diagram as a guide disconnect each non-functioning component one at a time while checking for the DTC to become stored. Repeat these steps for each component.
1. Turn the ignition off.
2. Disconnect the non-functioning component harness connector.
3. Turn the ignition on.
4. Activate the Panel Illumination.
5. With the scan tool, read DTCs.


Did the DTC change from active to stored when the component was disconnected?

Yes


No


3. CHECK THE (E12) PANEL LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND



1. Turn the ignition off.
2. Disconnect the Cluster C1 harness connector.
3. With all (E12) Panel Lamps Driver circuit components disconnected, measure the resistance to ground on the (E12) Panel Lamps Driver Circuit from the Cluster C1 harness connector.


Is the resistance less than 10K Ohms?

Yes


No