Diagnostic Test

1. Turn the ignition on.
2. With the scan tool, record and erase DTC's
3. Operate the Rear Defogger Switch several times.
4. With the scan tool, read DTC's.

   Does the scan tool display active DTC B10ED-REAR DEFROST CONTROL CIRCUIT OVERCURRENT?

   Yes 

   • Go to step  2

   No 

   • The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
   • Perform BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .

1. Turn the ignition off.
2. Inspect the following connector terminal condition. Check for signs of corrosion build up or damage that would compromise the terminal to controller pin connector.
   NOTE: Make sure that all in-line connectors are inspected for corrosion and/or damage.
3. Disconnect the TIPM C8 harness connector.
4. Visually inspect the wiring harness. Look for any chafed, pierced, pinched or partially broken wires hidden in the wire insulation.

   Were any of the above conditions found?

   Yes 

   • Repair or replace as necessary.
   • Perform BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .

   No 

   • Go to step  3

Is vehicle equipped with heated mirrors?

Yes 

• Go to step  4

No 

• Go to step  7

Fig 1: Checking Fused Rear Defogger Control Output Circuit

Courtesy of CHRYSLER LLC

1. Disconnect both mirror connectors.
2. With a jumper wire, connect one end to the (C16) Fused Rear Defogger Control Output circuit at one mirror connector and the other to a clean chassis ground.
3. Using a 12-volt test light to battery voltage, probe the (C16) Rear Defogger Control Output circuit in the TIPM C8 harness connector.
   NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.