Diagnostic Aids
The following are the correct switch resistance value ranges and the correct counts that are displayed in the Cruise parameter in the Body and Accessories / Cruise Control / IPM / Inputs data list, when each switch is pressed individually. If no switch is pressed the resistance value should be infinite.
Switch Function | Resistance Value Range (ohms) | Counts |
|---|---|---|
OFF | O.L. | 0 |
On | 7.8-8.6K ohms | 29 |
Resume | 2.7-3.0K ohms | 76 |
Set | 1.2-1.3K ohms | 148 |
For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Step | Action | Values | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Cruise Control Schematics Connector End View Reference: Cruise Control Connector End Views or Computer/Integrating Systems Connector End Views in Computer/Integrating Systems | ||||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | ||||||
2 |
Does the test lamp illuminate? | -- | Go to Step 3 | Go to Step 7 | ||||||
3 |
Important: The cruise control on/off switch must be turned ON in order to correctly view the set/coast resistance value with the DMM.
Do the cruise control function switch resistance values measure between the specified values? | Off = O.L. On = 7.8-8.6 K ohms Resume = 2.7-3.0 K ohms Set = 1.2-1.3 K ohms | Go to Step 4 | Go to Step 5 | ||||||
4 | Test the cruise control set/coast and resume/accelerate switch signal circuit for the following:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 6 | ||||||
5 | Inspect for poor connections at the harness connector of the cruise control 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 10 | Go to Step 8 | ||||||
6 | Inspect for poor connections at the harness connector of the BCM. 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 10 | Go to Step 9 | ||||||
7 | Repair the following in the remote radio control head accessory supply voltage circuit:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 10 | -- | ||||||
8 | Replace the cruise control switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | -- | Go to Step 10 | -- | ||||||
9 | Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 10 | -- | ||||||
10 | Operate the vehicle with in the conditions for cruise control operation. Does the cruise control system operate properly? | -- | System OK | Go to Step 2 | ||||||
