Nissan Rogue (T33) 2021-Present Service Manual: Dtc/circuit Diagnosis :: Lin Communication Circuit
Diagnosis Procedure
CHECK BCM OUTPUT SIGNAL
-
Ignition switch ON.
-
Check signal between BCM harness connector and ground using an oscilloscope.
(+) (−) Signal
(Reference value)BCM Connector Terminal With type A meter: B123 91 Ground 
With type B meter: M18 24
Is the inspection result normal?
YES>>GO TO 3.
NO>>GO TO 2.
CHECK LIN COMMUNICATION CIRCUIT
-
Ignition switch OFF, and then wait for 3 minutes with driver door open.
NOTE:
-
Even after ignition switch OFF, power is supplied to accessories for a certain amount of time by the AUTO ACC function.
-
When Nissan Ariya vehicle is operated while on standby, power may be supplied to accessories.
-
-
Disconnect following connectors:
-
BCM
-
Power window main switch
-
Front power window motor (driver side)
-
Passenger door mirror control module (if so equipped)
-
Moonroof motor assembly (if so equipped)
-
Sunshade motor assembly (if so equipped)
-
-
Check continuity between BCM harness connector and ground.
BCM (–) Continuity Connector Terminal With type A meter: B123 91 Ground No With type B meter: M18 24
Is the inspection result normal?
YES>>Replace BCM. Refer to Removal and Installation.
NO>>Repair or replace harness.
CHECK LIN COMMUNICATION SIGNAL
-
Ignition switch OFF, and then wait for 3 minutes with driver door open.
NOTE:
-
Even after ignition switch OFF, power is supplied to accessories for a certain amount of time by the AUTO ACC function.
-
When Nissan Ariya vehicle is operated while on standby, power may be supplied to accessories.
-
-
Disconnect following connectors:
-
Power window main switch
-
Front power window motor (driver side)
-
-
Ignition switch ON.
-
Check signal between power window main switch harness connector, front power window motor (driver side) harness connector and ground using an oscilloscope.
(+) (−) Signal
(Reference value)Connector Terminal Power window main switch D6*1
D27*24 Ground 
Front power window motor (driver side) D10 6 *1: With automatic drive positioner
*2: Without automatic drive positioner
Is the inspection result normal?
YES>>Inspection End.
NO-1>>Power window main switch: GO TO 4.
NO-2>>Front power window motor (driver side): GO TO 5.
CHECK LIN COMMUNICATION CIRCUIT (POWER WINDOW MAIN SWITCH)
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Ignition switch OFF.
-
Disconnect BCM connector.
-
Check continuity between BCM harness connector and power window main switch harness connector.
BCM Power window main switch Continuity Connector Terminal Connector Terminal With type A meter: B123 91 D6*1
D27*24 Yes With type B meter: M18 24 D6*1
D27*24 Yes *1: With Automatic Drive Positioner
*2: Without Automatic Drive Positioner
Is the inspection result normal?
YES>>Inspection End.
NO>>Repair or replace harness.
CHECK LIN COMMUNICATION CIRCUIT [FRONT POWER WINDOW MOTOR (DRIVER SIDE)]
-
Ignition switch OFF.
-
Disconnect BCM connector.
-
Check continuity between BCM harness connector and front power window motor (driver side) harness connector.
BCM Front power window motor (driver side) Continuity Connector Terminal Connector Terminal With type A meter: B123 91 D10 6 Yes With type B meter: M18 24
Is the inspection result normal?
YES>>Inspection End.
NO>>Repair or replace harness.
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