Nissan Maxima Service and Repair Manual: B2605 transmission range switch
BCM confirms the shift position with the following 4 signals.
CVT selector lever
Transmission range switch
P position signal from IPDM E/R (CAN)
P position signal from TCM (CAN)
DTC DETECTION LOGIC
If DTC B2605 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-29, "DTC Logic".
If DTC B2605 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-30, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
Turn ignition switch ON under the following conditions and wait for at least 1 second.
CVT selector lever is in the P or N position
Do not depress the brake pedal.
Check "Self diagnostic result" with CONSULT.
Regarding Wiring Diagram information, refer to SEC-147, "Wiring Diagram" or SEC-128, "Wiring Diagram".
1.CHECK DTC WITH IPDM E/R
Check "Self diagnostic result" with CONSULT. Refer to PCS-27, "DTC Index".
2.CHECK TRANSMISSION RANGE SWITCH CIRCUIT
Turn ignition switch OFF.
Disconnect TCM harness connector and BCM harness connector.
Check continuity between TCM connector F15 (A) terminal 20 and BCM harness connector M18 (B) terminal 48.
4. Check continuity between TCM harness connector F15 (A) terminal 20 and ground.
3.CHECK INTERMITTENT INCIDENT
Refer to GI-41, "Intermittent Incident".