Nissan Juke Service and Repair Manual : ECU diagnosis information
EPS control unit
Reference Value
VALUES ON THE DIAGNOSIS TOOL
CAUTION:
The output signal indicates the EPS control unit calculation data. The normal
values will be displayed
even in the event that the output circuit (harness) is open.
*1: Almost in accordance with the value of “MOTOR SIG”. It is not a malfunction though these values are not accorded when steering quickly.
*2: Normally displays 100%. In case of an excessive stationary steering, the assist curvature gradually falls. However, it returns to 100% when left standing.
*3: It is not a malfunction, though it might not be corresponding just after ignition switch in turned ON.
*4: Displays NORMAL in models without Nissan Dynamic Control System.
TERMINAL LAYOUT
PHYSICAL VALUES
Fail-Safe
• If any malfunction occurs in the system, and control unit detects the malfunction, EPS warning lamp on combination meter turns ON to indicate system malfunction.
• When EPS warning lamp is ON, enters into a manual steering state. (Control turning force steering wheel becomes heavy.)
Protection Function
EPS control unit decreases the output signal to EPS motor while extremely using the power steering function (e.g., full steering) consecutively for protecting EPS motor and EPS control unit (Overload protection control).
While activating overload protection control, the assist torque gradually decreases, and the steering wheel turning force becomes heavy. The normal assist torque is recovered if the steering wheel is not turned for a while.
DTC Inspection Priority Chart
When multiple DTCs are detected simultaneously, check one by one depending on the following priority list.
DTC Index
Diagnosis system (EPS control unit)
Consult-III Function FUNCTION CONSULT-III can display each diagnostic item using the diagnostic test modes shown following. *: The following diagnosis information is erased by erasing. • DTC ...Wiring diagram
ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM Wiring Diagram For connector terminal arrangements, harness layouts, and alphabets in a (option abbreviation; if not described in wiring diagram), ...Other materials:
Push-button ignition switch
Removal and Installation
REMOVAL
1. Remove the NATS antenna amp. Refer to SEC-167, "Removal and
Installation".
2. Remove the push-button ignition switch.
1. Disengage the push-button ignition switch fixing pawls
using minus driver etc.
2. Press the push-button ignition switch to ...
Precaution Necessary for Steering Wheel Rotation after Battery Disconnect
NOTE:
• Before removing and installing any control units, first turn the ignition
switch to the LOCK position, then disconnect
both battery cables.
• After finishing work, confirm that all control unit connectors are connected
properly, then re-connect both
battery cables.
• Always use CONS ...
P1551, P1552 battery current sensor
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform
the following before conducting
the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. ...