How To Proceed With Troubleshooting

HORN: HORN SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use these procedures to troubleshoot the horn 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. CHECK FOR DTC (ELECTRIC POWER CONTROL SYSTEM)*
(a) Using the Techstream, check if the electric power control system is functioning normally.

Result





B -- Go to ELECTRIC POWER CONTROL SYSTEM
A -- Continue to next step.

4. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
(a) Using the Techstream, check if the CAN communication system is functioning normally.

Result





B -- Go to CAN COMMUNICATION SYSTEM
A -- Continue to next step.

5. PROBLEM SYMPTOMS TABLE

Result





B -- Go to step 7
A -- Continue to next step.

6. OVERALL ANALYSIS AND TROUBLESHOOTING*
(a) DATA LIST / ACTIVE TEST Data List / Active Test
(b) Terminals of ECU Pinout Values and Diagnostic Parameters
NEXT -- Continue to next step.

7. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.

8. CONFIRMATION TEST
NEXT -- END