P1811

P1811 ELECTRIC SHIFT POWER SUPPLY RELAY

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, power switch OFF and wait for at least
10 seconds, then perform the next test.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Power switch ON and wait for 5 seconds or more.
2.Check DTC.
Is "P1811" detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK HARNESS BETWEEN ELECTRIC SHIFT CONTROL MODULE AND ELECTRIC SHIFT POWER

SUPPLY RELAY
1.Disconnect the electric shift control module connector.
2.Disconnect the electric shift power supply relay.
3.Check the continuity between electric shift power supply relay vehicle side harness connector terminal and ground.





4.Check the continuity between electric shift power supply relay vehicle side harness connector terminals and electric shift control module vehicle side harness connector terminals.





5.Check the voltage between electric shift control module vehicle side harness connector terminals and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace damaged parts.

2. CHECK GROUND CIRCUIT

Check the continuity between electric shift control module vehicle side harness connector terminals and ground.





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

3. CHECK ELECTRIC SHIFT POWER SUPPLY RELAY

Check the electric shift power supply relay. Refer to "Component Inspection (Electric Shift Power Supply Relay)" .
Is the inspection result normal?
YES- GO TO 4.
NO- Replace the electric shift power supply relay. Refer to "Component Parts Location"

4. DETECT MALFUNCTIONING ITEM

Check the following.
- Harness for short or open between 12V battery and electric shift power supply relay vehicle side harness connector terminal 1 and 3.
- 12V battery
- 10A fuse (# 75)
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace damaged parts.


Component Inspection (Electric Shift Power Supply Relay)


1. CHECK ELECTRIC SHIFT POWER SUPPLY RELAY

1.Disconnect the electric shift power supply relay. Refer to "Component Parts Location".
2.Apply 12 V direct current between electric shift power supply 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 electric shift power supply relay terminals 3 and 5.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace the electric shift power supply relay.