How to Proceed with Troubleshooting

CRUISE CONTROL: CRUISE CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use these procedures to troubleshoot the cruise control system.
- *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
NEXT -- Continue to next step.
3. PROBLEM SYMPTOM CONFIRMATION
NEXT -- Continue to next step.
4. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)*
(a) Check for output DTCs.
HINT: The ECM of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system.

Result





B -- PROCEED TO MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.
5. CHECK CAN COMMUNICATION SYSTEM*
(a) Check for output DTCs.
HINT: The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.





B -- PROCEED TO CAN COMMUNICATION SYSTEM
A -- Continue to next step.
6. CHECK FOR DTC (OTHER THAN MPX AND CAN SYSTEM)
(a) Check for DTC and note any codes that are output.
(b) Delete the DTC.
(c) Recheck for DTCs, and try to prompt the DTC by simulating the original activity that the DTC suggests.

Result





B -- Go to step 9
A -- Continue to next step.
7. PROBLEM SYMPTOMS TABLE

Result





B -- Go to step 9
A -- Continue to next step.
8. OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) DATA LIST/ACTIVE TEST Scan Tool Testing and Procedures.
(b) Terminals of ECM Pinout Values and Diagnostic Parameters.
NEXT -- Continue to next step.
9. REPAIR OR REPLACE
NEXT -- Continue to next step.
10. CONFIRMATION TEST
NEXT -- END