B2296

B2296-AUXILIARY ELECTRIC COOLANT PUMP INTERNAL





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Front Control Module (FCM) is configured correctly.

- Set Condition:
Bus messages are received from the Powertrain Control Module (PCM) showing that the Auxiliary Electric Coolant Pump is at 0 GPM for 10 seconds when a valid GPM should be present.
NOTE: Normal operation is 0 to 6.5 GPM.





Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview.

1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury

NOTE: Make sure the IOD fuse is installed and the 12-volt battery voltage is between 10 and 16 volts before proceeding.

1. With the scan tool, read DTCs.

Are there any Powertrain Control Module DTCs present?

Yes

- Testing and Inspection Perform the appropriate diagnostic procedure. If the DTC P1A0A-AUXILIARY HEATER ELECTRIC COOLANT PUMP - FAULT PRESENT - HEV is present, perform its respective test first.

No

- Go To 2

2. CHECK IF THE DTC IS ACTIVE
1. With the scan tool, read HVAC DTCs.

Is this DTC active?

Yes

- If no communication DTCs are present, replace and program the A/C Heater Control.
- Perform the HVAC VERIFICATION TEST. HVAC Verification Test.

No

- Go To 3

3. CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, partially broken wires.
4. Check the connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
5. Wiggle the wiring and connectors while checking for shorted and open circuits.
6. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the HVAC VERIFICATION TEST. HVAC Verification Test.

No

- Test complete.