Cruise Control: Testing and Inspection
Outline^ There are two on-board diagnostic functions:operation Mode, which checks for and indicates correct operation of the input signals to the control module; and Condition Detection Mode, which indicates troubles in the system.
^ The two functions can be done by using either of the following methods:
1. Checking the flashing pattern of the cruise set indicator light in the instrument cluster.
2. Checking the output of the data link connector by using the SST (NGS set).
Inspection Order
Inspection of Diagnostic Trouble Codes for operation Mode
Using the cruise set indicator light
NOTE:
^ If an operation Mode is not indicated, the following may be the cause of the malfunction.
1. RESUME/ACCEL switch
2. Cruise control main switch
3. Cruise control module
4. Open or short circuit in wiring harness
1. Turn the ignition switch to ON.
2. Verify that the cruise control main switch is off.
3. Press and hold the RESUME/ACCEL switch then press the cruise control main switch to activate system inspection. (The cruise set indicator light will illuminate.)
4. Operate each switch as described and note the operation code list pattern. If the cruise set indicator light does not flash, inspect the corresponding system area.
5. The operation Mode is canceled by turning the ignition switch to LOCK or turning off the cruise control main switch.
Using the SST (NGS set)
1. Connect the SST (NGS set) to the data link connector and battery.
2. Turn the ignition switch to ON.
3. Press and hold the RESUME/ACCEL switch, then press the cruise control main switch to activate system inspection. (The cruise set indicator light will illuminate.)
4. Set the SST (NGS set) to AUX 2.
5. Select "VEHICLE & ENGINE SELECTION" and press TRIGGER. (Select the model and specifications of the vehicle you're testing.)
6. Select "DIAGNOSTIC DATA LINK" and press TRIGGER.
7. Select "CCM - CRUISE CONTROL MODULE' and press TRIGGER.
8. Select DIAGNOSTIC TEST MODE" and press TRIGGER.
9. Select "CRUISE CONTROL INPUT SW SELF TEST" and press TRIGGER.
10. Press START.
11. Operate each switch as described and note the operation code list pattern.
If a diagnostic trouble code is not indicated, inspect the corresponding system area.
12. If normal, "N0 CODES RECEIVED" will then be indicated.
13. Remove the SST (NGS set).
14. The operation Mode is canceled by turning the ignition switch to LOCK or tuning off the cruise control main switch.
Operation code list
Inspection of Diagnostic Trouble Codes for Condition Detection Mode
Using the cruise set indicator light
NOTE:
^ If the RESUME/ACCEL switch on the cruise control switch is malfunctioning, the cruise set indicator light will not give a correct indication when you inspect the system. Use the SST (NGS set) to determine the cause of the malfunction.
1. Turn on the cruise control main switch.
2. Drive the vehicle.
3. operate the cruise control system and verify that the set deceleration, acceleration, resume, and cancel controls function by operating each of the cruise control switches.
4. Stop the vehicle and let it idle.
5. Press and hold the RESUME/ACCEL switch for at least 3 seconds. The cruise set indicator light will illuminate for 3 seconds, and then go out for at least 2 seconds.
6. If a diagnostic trouble cede is indicated, inspect the corresponding system area.
7. The Condition Detection Mode is canceled by turning off the cruise control main switch or driving the vehicle at over 16 kph (10 mph).
Using the SST (NGS set)
1. Turn on the cruise control main switch.
2. Drive the vehicle.
3. operate the cruise control system and verify that the set deceleration, acceleration, resume, and cancel controls function by operating each of the cruise control switches.
4. Stop the vehicle and let it idle.
5. Connect the SST (NGS set) to the data link connector and battery.
6. Set the SST (NGS set) to AUX 2.
7. Select "VEHICLE & ENGINE SELECTION" and press TRIGGER.
(Select the model and specifications of the vehicle you're testing.)
8. Select "DIAGNOSTIC DATA LINK" and press TRIGGER.
9. Select 'CCM - CRUISE CONTROL MODULE" and press TRIGGER.
10. Select "DIAGNOSTIC TEST MODE" and press TRIGGER.
11. Select "CRUISE CONTROL SELF TEST" and press TRIGGER.
12. Press START.
13. If normal, "N0 CODES RECEIVED" will then be indicated.
14. If a diagnostic trouble code is indicated, inspect the corresponding system area.
15. Remove the SST (NGS set).
16. The Condition Detection Mode is canceled by turning the ignition switch to LOCK or turning off the cruise control main switch.
Condition code list