B10EC-BLOWER MOTOR CONTROL CIRCUIT OVERCURRENT (TIPM)
For a complete wiring diagram Refer to Section 8W
- When Monitored:
With the ignition on.
- Set Condition:
The Totally Integrated Power Module (TIPM) will set this DTC if it detects an overcurrent condition on the (C7) Blower Motor Control circuit for more than 500 ms when blower motor operation is requested.
| Possible Causes |
| BLOCKAGE STALLING BLOWER MOTOR |
| BLOWER MOTOR |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
Diagnostic Test
1. VERIFY DTC B10EC-BLOWER MOTOR CONTROL CIRCUIT OVERCURRENT IS ACTIVETurn the ignition on.
With the scan tool, erase DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display active: B10EC-BLOWER MOTOR CONTROL CIRCUIT OVERCURRENT?
Yes
- Go To2
No
- The condition that caused this symptom is currently not present. Check 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, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2. CHECK FOR PROPER BLOWER MOTOR OPERATION
Turn the ignition on.
Turn the Blower Motor on.
Does the Blower Motor operate normally?
Yes
- Go To4
No
- Go To3
3. CHECK FOR ACTIVE: B10E9–BLOWER MOTOR CONTROL CIRCUIT LOW
Turn the ignition on.
With the scan tool, erase DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
Turn on the Blower Motor.
With the scan tool, read DTCs.
Does the scan tool display active: B10E9–BLOWER MOTOR CONTROL CIRCUIT LOW?
Yes
- Follow the diagnostics for Code B10E9–BLOWER MOTOR CONTROL CIRCUIT LOW.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To4
4. CHECK FOR 12 VOLTS TO THE BLOWER MOTOR
Turn the ignition off.
Disconnect the Blower Motor harness connector.
Turn the ignition on.
Turn the Blower Motor control on.
Using a volt meter measure the voltage on the (C7) Blower Motor Control circuit in the Blower Motor harness connector.
Does the volt meter read 12 volts?
Yes
- Go To5
No
- Go To6
5. CHECK FOR A BLOCKAGE STALLING THE BLOWER MOTOR
Turn the ignition off.
Remove the Blower Motor from the HVAC housing assembly.
Look for anything on the Blower Motor and in the HVAC housing that is physically preventing Blower Motor operation.
Is anything physically preventing Blower Motor operation?
Yes
- Repair as necessary. Also, check Blower Motor for proper operation. Reinstall, or replace the Blower Motor as necessary in accordance with the service information.
No
- Replace the Blower Motor in accordance with the service information.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
6. CHECK FOR CHAFING IN THE (C7) BLOWER MOTOR CONTROL CIRCUIT
Turn the ignition off.
Check the (C7) Blower Motor Control circuit for wire chafing.
Is any wire chafing present?
Yes
- Repair the wire chafing on the (C7) Blower Motor Control circuit.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Replace the Totally Integrated Power Module (TIPM) in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).