B2601

B2601 SHIFT POSITION





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. Body Control System.
- If DTC B2601 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. 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-III.
Is DTC detected?
YES - Go to SEE 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. 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)
SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 6.
NO - Replace A/T shift selector. Removal And Installation.
6.CHECK 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. Removal And Installation.