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Vehicle » A L L Diagnostic Trouble Codes ( DTC ) » Testing and Inspection » B Code Charts » B2603 » Sedan Without Intelligent Key

Sedan Without Intelligent Key

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 See: U Code Charts\U1000\Security System\Sedan Without Intelligent Key.
If DTC B2603 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to See: U Code Charts\U1010\Security System\Sedan Without Intelligent Key.

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE

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.

Shift to N and wait for at least 1 second.
Shift to any gear other than P or N and wait for at least 1 second.
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 See: Testing and Inspection.
Is the Inspection result normal?
YES >> GO TO 2
NO >> Repair or replace malfunctioning parts.
2.CHECK PNP SWITCH CIRCUIT

Turn ignition switch OFF.
Disconnect TCM harness connector and BCM harness connector.

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

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

Turn ignition switch OFF.
Disconnect CVT device (park position switch) harness connector.

Check voltage between CVT device (park position switch) harness connector and ground.

Is the Inspection result normal?
YES >> GO TO 5
NO >> GO TO 4
4.CHECK CVT DEVICE POWER SUPPLY CIRCUIT

Disconnect BCM harness connector.

Check continuity between BCM harness connector M19 (A) terminal 84 and CVT device (park position switch) harness connector M23 (B) terminal 8.

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

Is the Inspection result normal?
YES >> Replace BCM. Refer to See: Body and Frame\Body Control Systems\Body Control Module\Service and Repair.
NO >> Repair harness or connector.
5.CHECK CVT DEVICE CIRCUIT

Disconnect BCM harness connector.

Check continuity between BCM harness connector M19 (A) terminal 87 and CVT device (park position switch) harness connector M23 (B) terminal 9.

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 See: B2601\Sedan Without Intelligent Key.
Is the Inspection result normal?
YES >> GO TO 7
NO >> Replace CVT device. Refer to See: Transmission and Drivetrain\Continuously Variable Transmission/Transaxle\Shifter CVT\Service and Repair\CVT RE0F10A\Removal And Installation.
7.CHECK INTERMITTENT INCIDENT
Refer to See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Service Information For Electrical Incident\Intermittent Incident.
>> Inspection End.