B2603

B2603 SHIFT POSITION STATUS





Description
BCM confirms the shift position with the following 2 signals.
- CVT selector lever
- P/N position switch




DTC Logic

DTC DETECTION LOGIC

NOTE:
- If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to Vehicle Security System.
- If DTC B2603 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to Vehicle Security System.






DTC CONFIRMATION PROCEDURE
1. PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine under the following conditions and wait for at least 1 second.
- CVT selector lever is in the P position.
- Do not depress the brake pedal.
2. Shift to N and wait for at least 1 second.
3. Shift to any gear other than P or N and wait for at least 1 second.
4. Check "Self diagnostic result" with CONSULT-III.
Is DTC detected?
YES - Refer to "Diagnosis Procedure".
NO - Inspection End.




Diagnosis Procedure
1. CHECK DTC WITH IPDM E/R
Check "Self diagnostic result" with CONSULT-III. Refer to Testing and Inspection.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace malfunctioning parts.
2.CHECK PNP SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM harness connector and BCM harness connector.





3. Check continuity between TCM harness connector F16 (A) terminal 20 and BCM harness connector M18 (B) terminal 48.





4. Check continuity between TCM harness connector F16 (A) terminal 20 and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair harness or connector.
3.CHECK CVT DEVICE POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect CVT device harness connector.





3. Check voltage between CVT device harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 4.
4.CHECK CVT DEVICE POWER SUPPLY CIRCUIT
1. Disconnect BCM harness connector.





2. Check continuity between BCM harness connector M19 (A) terminal 84 and CVT device harness connector M78 (B) terminal 8.





3. Check continuity between BCM harness connector M19 (A) terminal 84 and ground.





Is the inspection result normal?
YES - Replace BCM. Refer to Service and Repair.
NO - Repair harness or connector.
5.CHECK CVT DEVICE CIRCUIT
1. Disconnect BCM harness connector.





2. Check continuity between BCM harness connector M19 (A) terminal 87 and CVT device harness connector M78 (B) terminal 9.





3. Check continuity between BCM harness connector M19 (A) terminal 87 and ground.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair harness or connector.
6.CHECK CVT DEVICE
Refer to B2601.
Is the inspection result normal?
YES - GO TO 7.
NO - Replace CVT device. Refer to Removal And Installation.
7.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
Inspection End.