B10EC

B10EC - Blower Motor Control Circuit Overcurrent

For a complete wiring diagram, refer to.

• When Monitored: With the ignition ON.

• Set Condition: The totally integrated power module will set this DTC if it detects an overcurrent condition on the blower motor supply circuit when blower motor operation is requested.






Test Step 1 - Test for an Active or Stored DTC B10E9

• Turn the ignition ON.

• With the scan tool, read TIPM DTCs.

Does the scan tool display B10E9 Blower Motor Control Circuit Low?

Yes

• Diagnose and repair DTC B10E9 before attempting to diagnose this DTC. Refer to the table of contents in the HVAC section for a complete list of HVAC DTCs.

No

• Go to Test Step 2.

Test Step 2 - Inspect the TIPM and Blower Motor Connector Terminals and Wire Harness for a Condition Causing High Circuit Resistance

• Turn the ignition OFF.

• Disconnect the TIPM harness connector.

• Disconnect the blower motor harness connector.

• Inspect the connector terminals for signs of corrosion build up or damaged terminals.

• Visually inspect the wiring harness for any chafed, pierced, pinched or partially broken wires hidden in the wire insulation.

Were any of the conditions found?

Yes

• Repair as necessary.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Go to Test Step 3.

Test Step 3 - Test the Blower Motor Supply Circuit Function

• Connect one end of a jumper wire to the blower motor supply circuit in the blower motor harness connector and connect the other end of the jumper wire to a clean chassis ground.

• The test lamp should illuminate brightly. Compare the brightness to that of a direct connection to the battery.

• Using a test lamp connected to 12 volts, probe the blower motor supply circuit in the TIPM harness connector.

Does the test lamp illuminate brightly?

Yes

• Go to Test Step 4.

No

• Repair the supply circuit.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 4 - Test the Output from the TIPM on the Blower Motor Supply Circuit

• Reconnect the TIPM harness connector.

• Turn the ignition ON.

• With a scan tool in TIPM, select actuators, and actuate the blower motor.

• Using the test lamp connected to ground, probe the blower motor supply circuit in the blower motor harness connector.

Does the test lamp illuminate brightly?

Yes

• Go to Test Step 5.

No

• Replace the TIPM.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 5 - Test the Ground Circuit for High Resistance

• The test lamp should illuminate brightly. Compare the brightness to that of a direct connection to the battery.

• Using a test lamp connected to 12 volts, probe the ground circuit in the A/C heater control 32 - way harness connector.

Does the test lamp illuminate brightly?

Yes

• Replace the A/C heater control.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Repair the ground circuit.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior