Nissan Juke Service and Repair Manual : CAN communication circuit
Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Component Function Check
1.CHECK CAN COMMUNICATION CIRCUIT
1. Turn ignition switch ON.
2. Check DTC.
Is DTC detected? YES >> EC-1014, "Diagnosis Procedure" NO >> INSPECTION END.
Diagnosis Procedure
Go to LAN-17, "Trouble Diagnosis Flow Chart".
ASCD steering switch
Component Function Check 1.CHECK ASCD STEERING SWITCH FUNCTION 1. Turn ignition switch ON. 2. Check the voltage between ECM harness connector terminals under the following conditions. Is the i ...Cooling fan
Diagnosis Procedure 1.CHECK GROUND CONNECTION 1. Turn ignition switch OFF. 2. Check ground connection E38. Refer to Ground Inspection in GI-44, "Circuit Inspection". Is the inspectio ...Other materials:
Audible reminders
Key reminder chime
Models with Intelligent Key system:
A chime will sound if the driver side door is opened while the ignition switch
is pushed to the ACC position.
Make sure the ignition switch is pushed to the OFF position, and take the Intelligent
Key with you when leaving the vehicle.
Mo ...
Unlock sensor
Component Function Check
1.CHECK FUNCTION
1. Select “DOOR LOCK” of “BCM” using CONSULT-III.
2. Select “LOCK STATUS” in “DATA MONITOR” mode.
3. Check that the function operates normally according to the following
conditions.
Is the inspection result normal?
YES >> Unlock sensor is OK. ...
P0420 three way catalyst function
DTC Logic
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen storage c ...