DTC P1302
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 |
|---|---|
|
P1302: ENG A-STOP Control Module Power Input Signal Low Main power supply voltage is lower than specified voltage for specified time continuously. |
•“A-STOP” fuse
•“BTRY” fuse (D16AA model) •Main power supply circuit •ENG A-STOP control module |
Circuit Diagram
| [A]: | ENG A-STOP control module connector (View: [a]) | A2: | ENG A-STOP control module power supply circuit 2 | 1. | ENG A-STOP control module |
| [B]: | D16AA model | B1: | ENG A-STOP control module ground circuit 1 | 2. | “A-STOP” fuse |
| A1: | ENG A-STOP control module power supply circuit 1 | B2: | ENG A-STOP control module ground circuit 2 | 3. | “BTRY” fuse |
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Fuse check (D16AA model)
1)Check that ignition is “OFF”.
2)Check “BTRY” fuse.
Is check result OK?
|
Go to Step 2.
|
Replace fuse and check “A2” circuit for short to ground.
|
| 2 |
Fuse check
1)Check that ignition is “OFF”.
2)Check “A-STOP” fuse.
Is check result OK?
|
Go to Step 3.
|
Replace “A-STOP” fuse and go to Step 3.
|
| 3 |
ENG A-STOP control module power supply circuit check
1)Check that ignition is “OFF”.
2)Disconnect “E24” and “E25” connectors.
3)Check for proper terminal connection to “E24” and “E25” connectors.
4)If connections are OK, check that voltage between “A1” circuit and ground is battery voltage.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective wire harness.
|
| 4 |
ENG A-STOP control module ground circuit check
1)Set ignition “OFF”.
2)Check that resistance between each of “B1” and “B2” circuit and ground is less than 1 Ω.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective wire harness.
|
| 5 |
DTC check
1)Clear DTC.
2)Set ignition “OFF”.
3)Perform DTC Confirmation Procedure, and recheck for DTC.
Is DTC P1302 still detected?
|
Replace ENG A-STOP control module and recheck for DTC.
|
Check for intermittent trouble.
|