Kia Optima: Inspection
[Fuel pump]
| 1. |
Turn the ignition switch OFF, and then remove battery
(-) cable.
|
| 2. |
Remove the fuel pump assembly. |
| 3. |
Check motor operation by fuel pump connector (A)
connecting power (No.4) and ground (No.5).
Pin No.
|
Description
|
1
|
Fuel sender ground
|
2
|
-
|
3
|
Fuel sender signal
|
4
|
Fuel pump motor (+)
|
5
|
Fuel pump motor ground
|
|
[Fuel sender]
| 1. |
Turn the ignition switch OFF, and then remove battery
(-) cable.
|
| 2. |
Remove the fuel pump assembly. |
| 3. |
Using an ohmmeter, measure the resistance between
terminals 1 and 3 of sender connector (A) at each float level. 
Pin No.
|
Description
|
1
|
Fuel sender ground
|
2
|
-
|
3
|
Fuel sender signal
|
4
|
Fuel pump motor (+)
|
5
|
Fuel pump motor ground
|
|
| 4. |
Also check that the resistance changes smoothly when
the float is moved from "E" to "F".
Position
|
Resistance(Ω)
|
Capacity (ℓ)
|
E
|
198~205
|
5
|
Warning lamp
|
168~172
|
8.5
|
1/2
|
65~67
|
37.5
|
Sender (F)
|
7~9
|
68
|
|
1.
Release the residual pressure in fuel line (Refer
to “Release Residual Pressure in Fuel Line” in this group).
2.
Remove the fuel pump service cover (A) in ...
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Removal
1.
Turn the ignition switch OFF and disconnect the battery
negative (-) cable.
2.
Remove the fuel pump service cover (A) in the trunk.
3.
...
Removal