P1887

P1887 SUB E-OIL PUMP RELAY

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.
- GO TO 2.

2. CHECK DTC DETECTION

With CONSULT
1.Turn ignition switch ON and wait for 2 seconds or more.
2.Check DTC.
Is "P1887" detected?
YES- Go to .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK SUB ELECTRIC OIL PUMP RELAY

1.Turn ignition switch OFF and wait for 10 minutes or more.
2.Check the sub electric oil pump relay. .
Is the inspection result normal?
YES- GO TO 2.
NO- Replace the sub electric oil pump relay.

2. CHECK HARNESS BETWEEN SUB ELECTRIC OIL PUMP INVERTER AND SUB ELECTRIC OIL PUMP

RELAY
1.Disconnect the sub electric oil pump inverter.
2.Check the continuity between sub electric oil pump inverter vehicle side harness connector terminals and sub electric oil pump relay vehicle side harness connector terminals.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace damaged parts.

3. CHECK SUB ELECTRIC OIL PUMP RELAY POWER SUPPLY CIRCUIT

1.Turn ignition switch ON.
2.Check the voltage between sub electric oil pump relay vehicle side harness connector terminals and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace damaged parts.

4. CHECK HARNESS BETWEEN SUB ELECTRIC OIL PUMP RELAY AND BATTERY TERMINAL WITH

FUSIBLE LINK
1.Turn ignition switch OFF and wait for 10 minutes or more.
2.Disconnect the negative terminal from 12V battery.
3.Disconnect the battery terminal with fusible link connector.
4.Check the continuity between sub electric oil pump relay vehicle side harness connector terminal and battery terminal with fusible link vehicle side harness connector terminal.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace damaged parts.

5. DETECT MALFUNCTIONING ITEM

Check the following.
- Harness for short or open between 12V battery and battery terminal with fusible link
- 12V battery
- 50A fuse (#F, Battery terminal with fusible link)
- Battery terminal with fusible link
Is the inspection result normal?
YES- 1.Check intermittent incident. Intermittent Incident.
2.If inspection result is OK, replace the sub electric oil pump inverter. Service and Repair.
NO- Repair or replace damaged parts.


Component Inspection (Sub Electric Oil Pump Relay)


1. CHECK SUB ELECTRIC OIL PUMP RELAY

1.Disconnect the sub electric oil pump relay. Locations.
2.Apply 12V direct current between sub electric oil pump relay terminals 1 and 2.

CAUTION:
- Never make the terminals short.
- Connect the fuse between the terminals when applying the voltage.
3.Check the continuity between sub electric oil pump relay terminals 3 and 5.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace the sub electric oil pump relay.