Nissan Juke Service and Repair Manual : BCM branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of BCM.
2. Check the resistance between the BCM harness connector terminals.
- Models with Intelligent Key system
- Models without Intelligent Key system
Is the measurement value within the specification? YES >> GO TO 3.
NO >> Repair the BCM branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the BCM. Refer to the following.
• Models with Intelligent Key system: BCS-87, "Diagnosis Procedure" • Models without Intelligent Key system: BCS-155, "Diagnosis Procedure"
Is the inspection result normal? YES (Present error)>>Replace the BCM. Refer to the following.
• Models with Intelligent Key system: BCS-93, "Removal and Installation" • Models without Intelligent Key system: BCS-161, "Removal and Installation"
YES (Past error)>>Error was detected in the BCM branch line.
NO >> Repair the power supply and the ground circuit.
PTC branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the PTC heater control u ...
Can communication circuit
Diagnosis Procedure
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on CAN communication s ...
Other materials:
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 ...
Lubricant
Description
MAINTENANCE OF LUBRICANT LEVEL
The compressor lubricant is circulating in the system together with the
refrigerant. It is necessary to fill compressor
with lubricant when replacing A/C system parts or when a large amount of
refrigerant leakage is
detected. It is important to alwa ...
U1000 can comm circuit
Description
CAN (Controller Area Network) is a serial communication system for real time
application. It is an on-vehicle
multiplex communication system with high data communication speed and excellent
error detection ability.
Many electronic control units are equipped onto vehicles, and ea ...