B2603

DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC B2603 is displayed with DTC B2601, first perform the trouble diagnosis for DTC B2601. Refer to
"DTC Logic" B2601.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE 1

1.Shift the selector lever to the P (Park) position.
2.Turn ignition switch ON and wait 1 second or more.
3.Check DTC in Self-Diagnostic Result mode of BCM using CONSULT.
Is DTC detected?
YES- Go to "Diagnosis Procedure" .
NO- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE 2

1.Shift the selector lever to any position other than P (Park) and wait 1 second or more.
2.Check DTC in Self-Diagnostic Result mode of BCM using CONSULT.
Is DTC detected?
YES- Go to "Diagnosis Procedure" .
NO- Inspection End.


Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Engine Start Function.

1. CHECK CVT SHIFT SELECTOR SWITCH FUNCTION

1.Turn ignition switch ON.
2.Select "DETE/CANCEL SW" and "SFT PN/N SW" in DATA MONITOR mode with CONSULT.
3.Check "DETE/CANCEL SW" and "SFT PN/N SW" indication under the following conditions.





Is the inspection result normal?
YES- Refer to "Intermittent Incident" Intermittent Incident.
NO-1- If DETE/CANCEL SW is incorrect. GO TO 6.
NO-2- If SFT PN/N SW is incorrect. GO TO 2.

2. CHECK BCM INPUT SIGNAL

1.Turn ignition switch ON.
2.Check voltage between BCM harness connector and ground.





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

3. CHECK BCM INPUT SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect BCM connector.
3.Disconnect transmission range switch connector.
4.Check continuity between transmission range switch harness connector and BCM harness connector.





5.Check continuity between transmission range switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- GOT TO 5.

4. REPLACE BCM

1.Replace BCM. Refer to "Removal and Installation" Service and Repair.
2.Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.
- Inspection End.

5. CHECK DTC OF TCM

Check DTC in "Self Diagnostic Result" mode of "TCM" using CONSULT.
Is DTC detected?
YES- Perform the trouble diagnosis related to the detected DTC. Refer to "DTC Index" Testing and Inspection.
NO- Perform the trouble diagnosis related to the TCM power and ground circuits. Refer to "Diagnosis Procedure" Main Power Supply And Ground Circuit.

6. CHECK CVT SHIFT SELECTOR POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect CVT shift selector (park position switch) connector.
3.Check voltage between CVT shift selector (park position switch) harness connector and ground.





Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace harness.

7. CHECK CVT SHIFT SELECTOR POWER SUPPLY CIRCUIT

1.Disconnect BCM connector.
2.Check continuity between CVT shift selector (park position switch) harness connector and BCM harness connector.





3.Check continuity between CVT shift selector (park position switch) harness connector and ground.





Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace harness.

8. CHECK CVT SHIFT SELECTOR CIRCUIT

1.Disconnect BCM connector and IPDM E/R connector.
2.Check continuity between CVT shift selector (park position switch) harness connector and BCM harness connector.





3.Check continuity between CVT shift selector (park position switch) harness connector and ground.





Is the inspection result normal?
YES- GO TO 9.
NO- Repair or replace harness.

9. CHECK CVT SHIFT SELECTOR (PARK POSITION SWITCH)

Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 10.
NO- Replace CVT shift selector. Refer to "Removal and Installation" Removal And Installation.

10. REPLACE BCM

1.Replace BCM. Refer to "Removal and Installation" Service and Repair.
2.Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.
- Inspection End.


Component Inspection


1. CHECK CVT SHIFT SELECTOR (PARK POSITION SWITCH)

1.Turn ignition switch OFF.
2.Disconnect CVT shift selector connector.
3.Check continuity between CVT shift selector (park position switch) terminals.





Is the inspection result normal?
YES- Inspection End.
NO- Replace CVT shift selector. Refer to "Removal and Installation" Removal And Installation.