Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Physical Values
|
Terminal No. (Wire color) |
Description |
Condition |
Value (Approx.) |
||
|
+ |
- |
Signal name |
Input/Output |
||
|
2 (L) |
9 (BR) |
Fuel pump activation request signal |
Input |
Ignition switch: ON |
12 V |
|
Engine is running |
0 V |
||||
|
3 (W) |
-- |
Powertrain CAN-H |
Input/Output |
-- |
-- |
|
4 (L) |
-- |
Powertrain CAN-L |
Input/Output |
-- |
-- |
|
5 (GR) |
9 (BR) |
Battery power supply |
Input |
Ignition switch: ON |
Battery voltage |
|
6 (O) |
-- |
Sensor ground (Fuel pressure sensor) |
-- |
-- |
-- |
|
7 (V) |
9 (BR) |
Fuel pressure sensor signal |
Input |
Ignition switch: ON |
2.5 V |
|
Engine is running |
2.3 V |
||||
|
8 (G) |
9 (BR) |
Sensor power supply (Fuel pressure sensor) |
Output |
Ignition switch: ON |
5 V |
|
9 (BR) |
-- |
FPCM ground |
-- |
-- |
-- |
|
10 (O/LG) |
9 (BR) |
Battery power supply |
Input |
Always |
Battery voltage |
|
11 (BR/O) |
-- |
Fuel pump ground |
-- |
-- |
-- |
|
12 (O/L) |
9 (BR) |
Fuel pump control signal |
Output |
Ignition switch: ON |
0 V |
|
Engine is running (at idle) |
|||||
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
*: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to How to Handle Battery .
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.