B1070

B1070 - Blower Motor Control Circuit High Totally Integrated Power Module

For a complete wiring diagram, refer to.

• When Monitored: With the ignition ON.

• Set Condition: If the totally integrated power module detects voltage on the rear blower motor control output circuit when rear blower motor operation is requested OFF.






Test Step 1 - Verify DTC Is Active

• Turn the rear blower control switch to OFF.

• Turn the ignition OFF, wait 10 seconds, and turn the ignition ON.

• With the scan tool, erase TIPM DTCs.

• Turn the ignition OFF, wait 10 seconds, and turn the ignition ON.

• Turn the rear blower control switch to ON.

• With the scan tool, read TIPM DTCs.

Does this DTC reset?

Yes

• Go to Test Step 2.

No

• Test for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, corroded, and contaminated terminals.

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

Test Step 2 - Test the Rear Blower Motor Control Output Circuit for a Short to Voltage

• Turn the ignition OFF.

• Disconnect the TIPM C5 harness connector.

• Disconnect the rear blower motor module harness connector.

• Turn the ignition ON.

• Measure the voltage of the rear blower motor control circuit in the rear blower motor module harness connector.

Is the resistance less than 10k ohms?

Yes

• Repair the rear blower motor control circuit for a short to voltage.

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

No

• Replace the TIPM.

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