Conditions for Enabling Cruise Control

2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Conditions for Enabling Cruise Control
WARNING: This page is about a different car, the 2006 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  • The vehicle speed is greater than 40 km/h (25 mph).
  • The vehicle is not in PARK, REVERSE, NEUTRAL, or 1st gear.
  • The system voltage is between 12-16 volts.
Cruise Control Inoperative/Malfunctioning

Step Action Yes No
Schematic Reference: Cruise Control Schematics 
Connector End View Reference: Cruise Control Connector End Views , Engine Control Module (ECM) Connector End Views in Engine Controls - 2.2L (L61) or to Powertrain Control Module (PCM) Connector End Views in Engine Controls - 3.5L (L66)
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Turn the cruise control on/off switch OFF.
  4. With the scan tool, observe the Cruise Switch parameter in the powertrain control module (PCM) General Info Inputs data list.
Does the Cruise Switch parameter display Off?
Go to Step 3  Go to Step 11 
3
  1. With the scan tool, observe the Cruise Switch parameter.
  2. Turn the cruise on/off switch ON.
Does the Cruise Switch parameter display On?
Go to Step 4  Go to Step 12 
4
  1. With the scan tool, observe the Cruise Set/Coast parameter.
  2. Press and hold the set/coast switch.
Does the Cruise Set/Coast parameter display On?
Go to Step 5  Go to Step 14 
5
  1. With the scan tool, observe the Cruise Resume/Accel parameter.
  2. Press and hold the resume/accel switch.
Does the Cruise Resume/Accel parameter display On?
Go to Step 6  Go to Step 15 
6 With a scan tool, observe the Cruise Brake Switch parameter
Does the Cruise Brake Switch parameter display Released?
Go to Step 7  Go to Step 9 
7
  1. With a scan tool, observe the Cruise Brake Switch parameter
  2. Press and hold the brake pedal.
Does the Cruise Brake Switch parameter display Applied?
Go to Diagnostic Aids Go to Step 8 
8
  1. Turn OFF the Ignition.
  2. Disconnect the cruise brake switch.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Cruise Brake Switch parameter
Does the Cruise Brake Switch parameter display Applied?
Go to Step 23  Go to Step 18 
9
  1. Turn OFF the Ignition.
  2. Disconnect the cruise brake switch.
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp between the ignition 1 voltage circuit and a good ground.
Does the test lamp illuminate?
Go to Step 10  Go to Step 22 
10
  1. Connect a 3-ampere fused jumper between the ignition 1 voltage circuit and the brake switch signal circuit.
  2. With the scan tool, observe the Cruise Brake Switch parameter.
Does the Cruise Brake Switch parameter display Released?
Go to Step 23  Go to Step 19 
11
  1. Turn OFF the ignition.
  2. Disconnect the cruise switch.
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the Cruise Switch parameter.
Does the Cruise Switch parameter display Off?
Go to Step 20  Go to Step 16 
12
  1. Turn OFF the ignition.
  2. Disconnect the cruise switch.
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp between the ignition 1 voltage circuit and a good ground.
Does the test lamp illuminate?
Go to Step 13  Go to Step 22 
13
  1. Connect a 3-ampere fused jumper between the ignition 1 voltage circuit and the cruise control on switch signal circuit.
  2. With the scan tool, observe the Cruise Switch parameter.
Does the Cruise Switch parameter display On?
Go to Step 20  Go to Step 17 
14 Test the cruise control set/coast switch signal circuit for a short to ground, for an open, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 26  Go to Step 20 
15 Test the cruise control resume/accel switch signal circuit for a short to ground, for an open, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 26  Go to Step 20 
16 Test the cruise control on switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 26  Go to Step 21 
17 Test the cruise control on switch signal circuit for an open, for a short to ground, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 26  Go to Step 21 
18 Test the cruise brake switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 26  Go to Step 21 
19 Test the cruise brake switch signal circuit for an open, for a short to ground, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 26  Go to Step 21 
20 Inspect for poor connections at the harness connector of the cruise control switch. 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 26  Go to Step 24 
21 Inspect for poor connections at the harness connector of the engine control module (ECM)/PCM. 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 26  Go to Step 25 
22 Repair the short to ground, the open, or the high resistance in the ignition 1 voltage circuit. Refer to Wiring Repairs Wiring Systems.
Did you complete the repair?
Go to Step 26  -
23 Replace the cruise brake switch. Refer to Cruise Release Switch Replacement .
Did you complete the replacement?
Go to Step 26  -
24 Replace the cruise control switch. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column.
Did you complete the replacement?
Go to Step 26  -
25 Replace the ECM/PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 26  -
26
  1. Enable the inflatable restraint steering wheel module. Refer to SIR Disabling and Enabling Zone 3 in SIR.
  2. Operate the vehicle with in the conditions for cruise control operation.
Does the cruise control system operate properly?
System OK Go to Step 2 
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.