Kia Rio: Oil Pump Unit (OPU) Inspection - ISG (Idle Stop & Go) System - Engine Control / Fuel System - Kia Rio UB 2012-2021 Service ManualKia Rio: Oil Pump Unit (OPU) Inspection

OPU Problem Inspection Procedure
1.
TEST OPU GROUND CIRCUIT: Measure resistance between OPU and chassis ground using the backside of OPU harness connector as OPU side check point. If the problem is found, repair it.

Specification: Below 1Ω

2.
TEST OPU CONNECTOR: Disconnect the OPU connector and visually check the ground terminals on OPU side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.
3.
If problem is not found in Step 1 and 2, the OPU could be faulty. If so, make sure there were no DTC's before swapping the OPU with a new one, and then check the vehicle again. If DTC's were found, examine this first before swapping OPU.
4.
RE-TEST THE ORIGINAL OPU: Install the original OPU (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original OPU with a new one. If problem does not occur, this is intermittent problem (Refer to Intermittent Problem Inspection Procedure in Basic Inspection Procedure

     
Refer to DTC manual code P1775, P1777 to inspect oil pump unit.
Oil Pump Unit (OPU) Installation
1. Installation is the reverse of removal. ...

Brake Switch Description
The present brake switch is used as an input variable for the ISG function to detect bracke operation. ...

See also:

Rear Washer Switch Inspection
1. With the rear wiper & washer switch in each position, make sure that continuity exists between the terminals below. If continuity is not as specified, replace t ...

Removal
1. Disconnect the battery negative cable from the battery and then wait for at least 30 seconds. 2. Turn the steering wheel so that the fr ...

Inspection
Horn Inspection Test the horn by connecting battery voltage to the 2 terminal and ground the 1 terminal. 1 : 12V Ground(-) 2 : 12V (+)    ...

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