Symptom Related Diagnostic Procedures
OutlineThere are two on-board diagnostic functions:
1. Condition Detection Mode, which indicates troubles in the system.
2. Operation Mode which checks for and indicates correct operation of the input signals to the cruise control module.
The two functions can be done by using either of the following methods:
1. Checking the output of the data link connector by using the SST (NGS)
2. Checking the flashing pattern of the cruise set indicator light
NOTE: Use Condition Detection Mode or Operation Mode or both to inspect the cruise control system. Either diagnostic function can be done before the other. If one diagnostic function does not locate the trouble, carry out the other function.
Condition Detection Mode
Using NGS
1. Position the vehicle on a chassis roller.
2. Run the vehicle at more than 40 km/h (25 MPH) and turn the cruise control main switch on.
3. Operate each of the cruise control switches to operate the cruise actuator and depress the brake pedal to operate the brake switches.
4. Stop the vehicle and let it idle.
5. Connect the SST (NGS) to the data link connector and battery.
6. Set the SST (Super MECS Adapter) to AUX 2.
7. Select "VEHICLE & ENGINE SELECTION" on the SST (Control Unit) display, and then select the vehicle model, engine type, and model year.
8. Select "DIAGNOSTIC DATA LINK" on the SST (Control Unit) display.
9. Select "CCM-CRUISE CONTROL MODULE" on the SST (Control Unit) display, and then select the "DIAGNOSTIC TEST MODE'.
10. Decrease the vehicle speed to under 16 km/h (10 MPH).
11. Select "CRUISE CONTROL SELF TEST" on the SST (Control Unit) display.
12. (1) If a diagnostic trouble code is displayed, refer to the diagnostic trouble code table and inspect the appropriate system area.
(2) If "NO CODES RECEIVED" is displayed, the system areas shown in the diagnostic trouble code table are OK. Inspect another system area.
13. After the problems are corrected, repeat the condition detection mode procedure to verify that the system is operating normally.
Canceling Condition Detection Mode
To cancel condition detection mode, do any one of the following:
- Turn the cruise control main switch off.
- Turn the ignition switch to LOCK.
Using 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) to determine the cause of the malfunction.
1. Turn the ignition switch to ON.
2. Run the vehicle at more than 40 km/h (25 MPH) and turn the cruise control main switch on.
3. Operate each of the cruise control switches to operate the cruise actuator and depress the brake pedal to operate the brake switches.
4. Stop the vehicle and let it idle.
5. Press and hold the RESUME/ACCEL switch for at least 3 seconds to activate the on-board diagnosis system. The cruise set indicator light will illuminate for 3 seconds and then go out for at least 2 seconds.
6. If a problem is present, the cruise set indicator light will flash in one of the patterns shown below.
If there is no problem in the system, the light will not flash.
Canceling Condition Detection Mode
To cancel condition detection mode, do any one of the following:
- Turn the cruise control main switch off.
- Turn the ignition switch to LOCK.
- Drive the vehicle at over 16 km/h (10 MPH).
- If there are two or more problems in the cruise control system, the problem with the highest priority will be indicated.
Operation Mode
Using NGS
1. Carry out steps 5-8 of the condition detection mode procedure.
2. Select "CRUISE CONTROL INPUT SW SELF TEST" on the SST (Control Unit) display.
3. Operate each switch as it is shown on the SST (Control Unit) display and note the diagnostic trouble code.
4. Refer to the diagnostic trouble code table on page T-81. If the diagnostic trouble code shown in the table does not appear on the SST (Control Unit) display, inspect the corresponding system area.
5. After the problems are corrected, repeat the operation mode procedure to verify that the system is operating normally.
Using Cruise Set Indicator Light
1. Turn the ignition switch to ON.
2. Verify that the cruise control main switch is off.
3. Shift the transaxle to D range.
4. Push and hold the RESUME/ACCEL switch then push the cruise control main switch to activate system inspection. (The cruise set indicator light will illuminate.)
5. Operate each switch as described and note the diagnostic trouble code pattern. If the cruise set indicator light does not flash, inspect the corresponding system area.
Canceling Operation Mode
To cancel operation mode, do any one of the following:
- Turn the cruise control main switch oft.
- Turn the ignition switch to LOCK.
- This table shows the code numbers and flash patterns that will be indicated if the system is operating correctly.