Cruise Control Schematic Icons
Cruise Control Schematic Icons Icon Icon Definition CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling Zones. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs
Scheme 1
Scheme 2
Scheme 3
Scheme 4
| Callout | Component Name |
|---|---|
| 1 | Frame |
| 2 | Hood Latch Bracket |
| 3 | Cooling Fan - Left |
| 4 | Cooling Fan - Right |
| 5 | Distance Sensing Cruise Control Module (w/K59) |
Scheme 5
| Callout | Component Name |
|---|---|
| 1 | Telescoping Drive Wheel |
| 2 | Steering Angle Sensor |
| 3 | Turn Signal/Multifunction Switch |
| 4 | Windshield Wiper/Washer Switch Assembly |
| 5 | Steering Wheel Controls Seek Button |
| 6 | Steering Wheel Controls Volume Button |
| 7 | C277 |
| 8 | Horn Switch Connector |
| 9 | Steering Wheel Controls Mute/Source Button -or- Heated Steering Wheel Button (KA1) |
| 10 | Steering Wheel Controls Voice/Preset Button |
| 11 | Heated Steering Wheel |
| 12 | Tilt/Telescope Switch |
| 13 | Tilt Actuator |
| 14 | C202 |
| 15 | Steering Column Lock Control Module (UA2) |
Scheme 6
| Callout | Component Name |
|---|---|
| 1 | Park Brake Switch |
| 2 | Brake Pedal Position Sensor |
| 3 | Accelerator Pedal Position (APP) Sensor |
| 4 | Left Front Floor Panel |
Test Description
The numbers below refer to the step numbers located in the diagnostic table.
- 2: This step is performed in order to confirm that DTC P0703 is current within the TCM or the ECM.
- 3: This step is performed in order to correct a BPP sensor that must be calibrated, possibly due to a IPM replacement or for a BPP sensor that is out of adjustment.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Cruise Control Schematics Connector End View Reference: Computer/Integrating Systems Connector End Views in Computer/Integrating Systems IMPORTANT: Repair all DTCs related to the stop lamps and to the brake system before performing this table. | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Is DTC P0703 current in the transmission control module (TCM) or the engine control module (ECM)? | Go to Step 3 | Go to Diagnostic Aids |
| 3 | Perform the brake pedal position (BPP) sensor calibration procedure. Refer to Brake Pedal Position Sensor Calibration in Lighting Systems. Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC. Does the DTC reset? | Go to Step 4 | System OK |
| 4 | Inspect for poor connections at the harness connector of the instrument panel module (IPM). Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 5 |
| 5 | Replace the IPM. Refer to Control Module References in Computer/Integrating Systems. Did you complete the replacement? | Go to Step 6 | |
| 6 | Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC. Does the DTC reset? | Go to Step 2 | System OK |
| IMPORTANT |
|---|
| Repair all DTCs related to the stop lamps and to the brake system before performing this table. |
DTC P0703
Symptoms - Cruise Control
| IMPORTANT | The following steps must be completed before using the symptom tables. |
- Before using the symptom diagnostic table, perform the «Diagnostic Trouble Code (DTC) List - Vehicle»(ref-197532-S21291039732005101200000) in Vehicle DTC Information in order to verify the following conditions: There are no DTCs set. The module can communicate via the GM LAN.
- Review the system operation in order to understand the system functions. Refer to «Cruise Control Description and Operation (Adaptive Cruise Control)»(ref-197544-S18909061442005101200000) or «Cruise Control Description and Operation (Conventional Cruise Control)»(ref-197544-S12181850422005101200000) .
Adaptive Cruise Control (ACC) System Description
The Adaptive Cruise Control (ACC) System depends on various modules on the vehicle to function and each module performs a function that is critical to the proper operation of the ACC System. ACC will not operate if any components fail. Communication between modules is via the High-Speed GMLAN serial data circuit. The instrument panel module (IPM) provides a translating gateway function for the GMLAN serial data links. The GMLAN utilizes the controller area network (CAN) communications protocol. The following is a functional description of the distance sensing cruise control (DSCC) module and the other associated components
Cruise Control Description and Operation (Conventional Cruise Control)
Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions at speeds above 40 km/h (25 mph). Steep grades may cause variations in the selected vehicle speeds.
The following are the main components of the Cruise Control System
- The accelerator pedal
- The brake pedal position (BPP) sensor
- The instrument panel module (IPM)
- The cruise control on/off switch
- The engine control module (ECM)
- The accel/resume switch
- The set/coast switch
- The throttle actuator control (TAC) motor
- The vehicle speed sensor (VSS)