B10B9-CABIN HEATER 2 CONTROL CIRCUIT HIGH

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

When Monitored:
With the ignition on and whenever the Cabin Heater Relay is energized.
Set Condition:
If the Totally Integrated Power Module (TIPM) detects that the (K361) Cabin Heater Relay 2 Control circuit voltage is above a predetermined value.

Possible Causes
(K361) CABIN HEATER RELAY 2 CONTROL CIRCUIT SHORTED TO VOLTAGE
CABIN HEATER RELAY 2
TOTALLY INTEGRATED POWER MODULE (TIPM)

1. VERIFY THAT THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

1.	Ignition on, engine not running.

2.	Using the scan tool, read and record TIPM DTCs.

NOTE: Record the Environmental Data for all DTCs before erasing. The Environmental Data can help in duplicating the conditions in which the DTC originally set.

3.	Using the scan tool, erase TIPM DTCs.

4.	Using the scan tool, actuate the Cabin Heater Relay 2 and allow the actuator to run for a least of two minutes.

5.	Using the scan tool, read TIPM DTCs.

Did this DTC reset?

Yes

Go To 2

Go To 4

2. CHECK THE CABIN HEATER RELAY 2

1.	Turn the ignition off to the lock position.

2.	Install a substitute relay for the Cabin Heater Relay 2.

NOTE: Check connectors - Clean/repair as necessary.

3.	Ignition on, engine not running.

4.	Using the scan tool, erase TIPM DTCs.

5.	Using the scan tool, actuate the Cabin Heater Relay 2 and allow the actuator to run for a least of two minutes.

6.	Using the scan tool, read TIPM DTCs.

Did this DTC reset?

Yes

Go To 3

Replace the Cabin Heater Relay 2 in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

3. CHECK (K361) CABIN HEATER RELAY 2 CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

1.	Turn the ignition off to the lock position.

2.	Remove the substitute Cabin Heater Relay 2.

3.	Disconnect the TIPM C1 harness connector.

4.	Ignition on, engine not running.

5.	Measure the voltage of the (K361) Cabin Heater Relay 2 Control circuit.

Is there any voltage present?

Yes

Repair the (K361) Cabin Heater Relay 2 Control circuit for a short to voltage.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

Replace and program the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

4. CHECK THE WIRING AND CONNECTORS

1.	The conditions necessary to set the DTC are not present at this time.

2.	Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC originally set.

3.	Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.

4.	Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, or partially broken wires.

5.	Check the connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.

6.	Wiggle the wiring and connectors while checking for shorted and open circuits.

Were there any problems found?

Yes

Repair as necessary.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

Test complete.

B10B9-CABIN HEATER 2 CONTROL CIRCUIT HIGH

Possible Causes