Nissan Murano: Security Control System :: Dtc/circuit Diagnosis / B2603 Shift Posi Status

DTC Description

DTC DETECTION LOGIC

NOTE:

If DTC B2603 is displayed with DTC B2601, first perform the trouble diagnosis for DTC B2601. Refer to DTC Description.

POSSIBLE CAUSE

• Harness or connector

  [CVT shift selector (detent switch) circuit is open or shorted.]

• Harness or connectors

  (TCM circuit is open or shorted.)

• CVT shift selector (detent switch)

• CVT assembly (TCM)

• BCM

FAIL-SAFE

—

PERFORM DTC CONFIRMATION PROCEDURE 1

CONSULT

1. Shift the selector lever to the P (Park) position.

2. Ignition switch ON and wait 1 second or more.

3. Select “Self Diagnostic Result” mode of “BCM”.

4. Check DTC.

Is DTC detected?

Refer to Diagnosis Procedure.

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE 2

CONSULT

1. Shift the selector lever to any position other than P (Park) and wait 1 second or more.

2. Select “Self Diagnostic Result” mode of “BCM”.

3. Check DTC.

Is DTC detected?

Refer to Diagnosis Procedure.

Inspection End.

CHECK CVT SHIFT SELECTOR FUNCTION

1. Ignition switch ON.

2. Select “DETE/CANCL SW” and “SFT PN/N SW” in “Data Monitor” mode of “BCM(INTELLIGENT KEY)”.

3. Check “DETE/CANCL SW” and “SFT PN/N SW” indication under the following conditions:

   Monitor item	Condition		Indication
   DETE/CANCL SW	CVT Shift selector	In any position other than P (Park)	ON
   		P (Park)	OFF
   SFT PN/N SW	CVT Shift selector	In any position other than P (Park)	OFF
   		P (Park)	ON

Is the inspection result normal?

Refer to Intermittent Incident.

If “DETE/CANCL SW” is incorrect. GO TO 6.

If “SFT PN/N SW” is incorrect. GO TO 2.

CHECK BCM INPUT SIGNAL

1. Ignition switch ON.

2. Check voltage between BCM harness connector and ground.

   (+)		(–)	Condition		Voltage (Approx.)
   BCM
   Connector	Terminal
   M18	39	Ground	Selector lever	P or N position	Battery voltage
   				Other than above	0 V

Is the inspection result normal?

GO TO 4.

GO TO 3.

CHECK BCM INPUT SIGNAL CIRCUIT

1. Ignition switch OFF.

2. Disconnect BCM connector, transmission range switch connector and ECM connector F79.

3. Check continuity between transmission range switch harness connector and BCM harness connector.

   Transmission range switch		BCM		Continuity
   Connector	Terminal	Connector	Terminal
   F29	10	M18	39	Yes

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

   Transmission range switch		Ground	Continuity
   Connector	Terminal
   F29	10		No

Is the inspection result normal?

GO TO 5.

Repair or replace harness.

REPLACE BCM

1. Replace BCM. Refer to Removal and Installation.

2. Perform initialization of BCM and registration of all Intelligent Keys. Refer to Work Procedure.

Inspection End.

CHECK DTC OF TCM

CONSULT

Select “Self Diagnostic Result” mode of “TRANSMISSION”.

Is DTC detected?

Perform the trouble diagnosis related to the detected DTC. Refer to DTC Index.

Perform the trouble diagnosis related to the TCM power and ground circuits. Refer to Diagnosis Procedure.

CHECK CVT SHIFT SELECTOR POWER SUPPLY

1. Ignition switch OFF.

2. Disconnect CVT shift selector (detent switch) connector.

3. Check voltage between CVT shift selector (detent switch) harness connector and ground.

   (+)		(–)	Voltage (Approx.)
   CVT shift selector (detent switch)
   Connector	Terminal
   M78	5	Ground	Battery voltage

Is the inspection result normal?

GO TO 8.

GO TO 7.

CHECK CVT SHIFT SELECTOR POWER SUPPLY CIRCUIT

1. Disconnect BCM connector.

2. Check continuity between CVT shift selector (detent switch) harness connector and BCM harness connector.

   CVT shift selector (detent switch)		BCM		Continuity
   Connector	Terminal	Connector	Terminal
   M78	5	M19	69	Yes

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

   CVT shift selector (detent switch)		Ground	Continuity
   Connector	Terminal
   M78	5		No

Is the inspection result normal?

Replace BCM. Refer to Removal and Installation.

Repair or replace harness.

CHECK CVT SHIFT SELECTOR CIRCUIT

1. Disconnect BCM connector and IPDM E/R connector E119.

2. Check continuity between CVT shift selector (detent switch) harness connector and BCM harness connector.

   CVT shift selector (detent switch)		BCM		Continuity
   Connector	Terminal	Connector	Terminal
   M78	6	M18	20	Yes

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

   CVT shift selector (detent switch)		Ground	Continuity
   Connector	Terminal
   M78	6		No

Is the inspection result normal?

GO TO 9.

Repair or replace harness.

CHECK CVT SHIFT SELECTOR (DETENT SWITCH)

Refer to Component Inspection.

Is the inspection result normal?

GO TO 10.

Replace CVT shift selector. Refer to Removal and Installation.

REPLACE BCM

1. Replace BCM. Refer to Removal and Installation.

2. Perform initialization of BCM and registration of all Intelligent Keys. Refer to Work Procedure.

Inspection End.

CHECK CVT SHIFT SELECTOR (DETENT SWITCH)

1. Ignition switch OFF.

2. Disconnect CVT shift selector (detent switch) connector.

3. Check continuity between CVT shift selector (detent switch) terminals.

   CVT shift selector (detent switch)		Condition		Continuity
   Terminal
   5	6	Selector lever	P (Park) position	No
   			Other than above	Yes

Is the inspection result normal?

Inspection End.

Replace CVT shift selector. Refer to Removal and Installation.