B218C-IGNITION RUN CONTROL 2 CIRCUIT OVERCURRENT





For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    With the ignition on.

  • Set Condition:

    Over current condition detected on the (F937) Fused Ignition Switch Output (Run) circuit.


Possible Causes
  
TERMINAL DAMAGE OR CORROSION
  
HIGH RESISTANCE ON THE (F937) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT
  
HIGH RESISTANCE ON THE (F936) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT
  
HEATED SEAT MODULE
  
CABIN HEATER RELAYS 1 AND 2
  
TIPM
  



Diagnostic Test

1.CHECK FOR ACTIVE DTC





Does the scan tool display this DTC as active?

Yes
  • Go To 2


No
  • If the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide, visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

2.INSPECT THE TIPM AND HEATED SEAT MODULE TERMINALS AND WIRE HARNESS FOR A CONDITION CAUSING HIGH CIRCUIT RESISTANCE









Were any of the above conditions found?

Yes


No
  • Go To 3

3.INSPECT THE CABIN HEATER RELAY TERMINALS AND WIRE HARNESS FOR A CONDITION CAUSING HIGH CIRCUIT RESISTANCE








Were any of the above conditions found?

Yes


No
  • Go To 4

4.



NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to battery.




Does the test light illuminate brightly?

Yes
  • Go To 5


No

5.



NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to battery.




Does the test light illuminate brightly?

Yes
  • Go To 6


No

6.



NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to battery.




Does the test light illuminate brightly?

Yes
  • Go To 7


No

7.







Does the test light illuminate brightly?

Yes


No
  • Go To 8

8.







Does the test light illuminate brightly?

Yes


No