Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Steering Wheel Schematics Connector End View Reference: Steering Wheel and Column Connector End Views DEFINITION: This diagnostic is for a heated steering wheel that will not turn ON. | ||||
1 | Did you review the Heated Steering Wheel operation and perform the necessary inspections? | -- | Go to Step 2 | |
2 | Attempt to operate the heated steering wheel. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Test the ignition voltage circuit at the underhood fuse block for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 4 |
4 | Remove the heated steering wheel switch and test for continuity, making sure that the switch is pressed as you test, between the supply voltage side and the ground side of the switch. Refer to Circuit Testing in Wiring Systems. Did you find continuity in the switch? | -- | Go to Step 5 | Go to Step 9 |
5 | Test the ignition voltage circuit of the heated steering wheel module for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 6 |
6 | Test the ground circuit of the heated steering wheel module for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 7 |
7 |
Does the resistance measure within the specified range? | 1.58-2.06 Ω (leather wheel) 1.69-2.13 Ω (wood wheel) | Go to Step 8 | Go to Step 13 |
8 |
Important: The thermistor resistance varies according to the temperature. Therefore, if you measure the resistance while the wheel is still warm, the resistance may vary outside of the specified range. Measure the resistance of the heated steering wheel thermistor. Does the resistance measure within the specified range? | 6K-35K Ω | Go to Step 10 | Go to Step 13 |
9 | Inspect for poor connections at the heated steering wheel switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 12 |
10 | Inspect for poor connections at the harness connector of the control module. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find the condition? | -- | Go to Step 11 | Go to Step 11 |
11 | Replace the steering wheel heat module. Refer to Steering Wheel Heat Module Replacement . Did you complete the replacement? | -- | Go to Step 14 | -- |
12 | Replace the heated steering wheel switch. Refer to Steering Wheel Control Switch Assembly Replacement . Did you complete the replacement? | -- | Go to Step 14 | -- |
13 | Replace the heated steering wheel. Refer to Steering Wheel Replacement . Did you complete the replacement? | -- | Go to Step 14 | -- |
14 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
