B2601

Description

BCM confirms the shift position with the following 4 signals.
- Selector lever
- Transmission range switch
- P position signal from IPDM E/R (CAN)
- P position signal from TCM (CAN)


DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC B2601 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to "DTC Logic" Body Control System.
- If DTC B2601 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to "DTC Logic" Body Control System.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON under the following conditions and wait 2 seconds or more.
-Selector lever is in the P or N position
-Do not depress brake pedal
2.Check "Self-diagnosis result" using CONSULT.
Is DTC detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK A/T SHIFT SELECTOR POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect A/T shift selector (detention switch) connector.
3.Check voltage between A/T shift selector (detention switch) harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK A/T SHIFT SELECTOR POWER SUPPLY CIRCUIT

1.Disconnect BCM connector.
2.Check continuity between A/T shift selector (detention switch) harness connector and BCM harness connector.





3.Check continuity between A/T shift selector (detention switch) harness connector and ground.





Is the inspection result normal?
YES- Replace BCM. Refer to "Removal and Installation" Removal and Installation.
NO- Repair or replace harness.

3. CHECK A/T SHIFT SELECTOR CIRCUIT (BCM)

1.Disconnect BCM connector and IPDM E/R connector.
2.Check continuity between A/T shift selector (detention switch) harness connector and BCM harness connector.





3.Check continuity between A/T shift selector (detention switch) harness connector and ground.





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

4. CHECK A/T SHIFT SELECTOR CIRCUIT (IPDM E/R)

Check continuity between A/T shift selector (detention switch) harness connector and IPDM E/R harness connector.





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

5. CHECK A/T SHIFT SELECTOR (DETENTION SWITCH)

Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 6.
NO- Replace A/T shift selector. Refer to "Removal and Installation" Removal and Installation.

6. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END


Component Inspection


1. CHECK A/T SHIFT SELECTOR (DETENTION SWITCH)

1.Turn ignition switch OFF.
2.Disconnect A/T shift selector connector.
3.Check continuity between A/T shift selector (detention switch) terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace A/T shift selector. Refer to "Removal and Installation" Removal and Installation.