DTC P254F
Precautions: Precautions for Diagnosing Trouble · Precautions for Servicing ENG A-STOP System · Precautions for Replacing ENG A-STOP Control Module · Precautions for Control Systems · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P254F: Engine Hood Switch Circuit ON/OFF signals from hood latch switch 1 and hood latch switch 2 are the same for specified time continuously. |
•Hood latch switch circuit / connector
•Hood latch switch •ENG A-STOP control module |
Circuit Diagram
| [A]: | ENG A-STOP control module connector (View: [a]) | A2: | Hood latch switch signal circuit 2 | 1. | Hood latch switch |
| A1: | Hood latch switch signal circuit 1 | B1: | Hood latch switch ground circuit | 2. | ENG A-STOP control module |
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Parameter check
1)Connect SUZUKI scan tool to DLC when ignition is “OFF”.
2)Set ignition “ON”.
3)Check “Hood Switch1” and “Hood Switch2” displayed on SUZUKI scan tool.
Is check result OK?
|
Check for intermittent trouble.
|
Go to Step 2.
|
| 2 |
Hood latch switch signal circuit check
1)Check that ignition is “OFF”.
2)Disconnect hood latch switch and “E25” connectors.
3)Check for proper terminal connection to hood latch switch and “E25” connectors.
4)If connections are OK, check the following points.
•Resistance of “A1” and “A2” circuits: less than 1 Ω
•Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between each of “A1” and “A2” circuit terminals and other terminal at hood latch switch connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
Hood latch switch ground circuit check
1)Set ignition “OFF”.
2)Check that resistance between “B1” circuit and ground is less than 1 Ω.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective wire harness.
|
| 4 |
Hood latch switch check
1)Check hood latch switch.
Is check result OK?
|
Replace ENG A-STOP control module and recheck for DTC.
|
Replace hood latch.
|