Oil Pump Unit (OPU) - With ISG (Idle Stop & Go) System

Removal

1. Remove the negative (-) battery terminal.
2. Remove the crash pad lower panel.
3. Remove the oil pump unit connector to the left side of the brake pedal.
4. Remove the oil pump unit (A) after removing the nuts (3ea).






Installation

1. Installation is the reverse of removal.

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 1Ohms

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

NOTE:
Refer to DTC manual code "P1775, P1777" to inspect oil pump unit.