Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Diagnose and repair all active Bus related Diagnostic Trouble Codes (DTCs) including Lost Communication DTCs before diagnosing this DTC.
2. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
  Is this DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK HEATED STEERING WHEEL TEMPERATURE SENSOR MESSAGE STATUS
1. With the scan tool, check the status of the Heated Steering Wheel Temperature Sensor.
  Does the Heated Steering Wheel Temperature Sensor status read "Signal Not Available (SNA)"?
  
  Yes
  - Go To 3
  No
  - The conditions that caused this DTC are not present at this time.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.
PERFORM VISUAL INSPECTION OF HEATED STEERING WHEEL TEMPERATURE SENSOR CONNECTORS, TERMINALS AND WIRING
WARNING:
Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Remove the Driver Airbag in accordance with the Service Information. Refer to AIR BAG, DRIVER, REMOVAL AND INSTALLATION .
2. Disconnect all Heated Steering Wheel Temperature Sensor related harness connectors.
3. Inspect the harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Were any problems found?
  
  Yes
  - Repair or replace the Heated Steering Wheel Temperature Sensor wiring harness in accordance with Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4

CHECK THE HEATED STEERING WHEEL TEMPERATURE SENSOR RESISTANCE

Measure the resistance of the Heated Steering Wheel Temperature Sensor between the (C92) Heated Steering Wheel Signal circuit and the (G907) EVIC Mux Return circuit at the Heated Steering Wheel Temperature Sensor component connector.

Compare your findings to the chart below:

Temperature Sensor Resistance
°C	°F	Nominal (Ohms)	Minimum (Ohms)	Maximum (Ohms)
0	32	32650	30601	34699
5	41	25388	23861	26914
10	50	19900	18754	21046
15	59	15708	14842	16574
20	68	12490	11831	13149
25	77	10000	9500	10500
30	86	8057	7632	8482
35	95	6531	6173	6889
40	104	5327	5024	5630
45	113	4369	4111	4626
50	122	3603	3384	3822
55	131	2986	2799	3174
60	140	2488	2327	2649
65	149	2083	1945	2221
70	158	1752	1633	1871
75	167	1481	1378	1585
80	176	1258	1168	1348
85	185	1072	994.2	1151
90	194	917.7	849.4	986.0
95	203	788.5	728.6	848.4
100	212	680.0	627.4	732.6

Is the resistance within range?

Yes

Replace the Left EVIC Switch in accordance with the Service Information. Refer to SWITCH, EVIC CONTROL, REMOVAL AND INSTALLATION .
Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST s.

Replace the Heated Steering Wheel Temperature Sensor (Heated Steering Wheel (HSW)) in accordance with the Service Information. Refer to WHEEL, STEERING, REMOVAL AND INSTALLATION .
Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .