Nissan Sentra Service Manual: Ecu diagnosis information

Nissan Sentra Service Manual / Electrical & power control / Body control system / Without intelligent key system / Ecu diagnosis information

Bcm

Reference value

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.

Activate and display TPMS transmitter IDs
Display tire pressure reported by the TPMS transmitter
Read TPMS DTCs
Register TPMS transmitter IDs
Test remote keyless entry keyfob relative signal strength

VALUES ON THE DIAGNOSIS TOOL

Terminal layout

Terminal layout

Physical values

Physical values

Fail-safe

Fail-safe

Fail-safe control by dtc

Bcm performs fail-safe control when any dtc are detected.

Fail-safe control of combination switch reading function caused by low

Fail-safe control of combination switch reading function caused by low power supply voltage

If voltage of battery power supply lower, BCM maintains combination switch reading to the status when input voltage is less than approximately 9 V.

Note:

When voltage of battery power supply is approximately 9 v or more, combination switch reading function returns to normal operation.

Dtc inspection priority chart

If some dtcs are displayed at the same time, perform inspections one by one based on the following priority chart.

Dtc index

Dtc index

Note:

Details of time display

Crnt: displays when there is a malfunction now or after returning to the normal condition until turning ignition switch off ƒ¸ on again.
1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1 → 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch OFF → ON after returning to the normal condition if the malfunction is detected again.

Wiring diagram

Diagnosis system (bcm)

Common item Common item : consult function (bcm - common item) APPLICATION ITEM CONSULT performs the following functions via CAN communication with BCM. Direct Diagnostic Mode Descriptio ...

Other materials:

EPS Warning lamp
Component Function Check 1.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP Check that the EPS warning lamp turns ON when ignition switch turns ON. Then, EPS warning lamp turns OFF after the engine is started. Is the inspection result normal? YES >> Inspection End. NO >> Perfo ...

U1002 System comm (CAN)
DTC Logic DTC DETECTION LOGIC DTC Display item Malfunction detected condition Possible cause U1002 SYSTEM COMM(CAN) When ABS actuator and electric unit (control unit) is not transmitting or receiving CAN communication signal for 2 seconds or less. C ...

Precautions For Engine Service
DISCONNECTING FUEL PIPING Before starting work, check no fire or spark producing items are in the work area. Release fuel pressure before disconnecting and disassembly. After disconnecting pipes, plug openings to stop fuel leakage. DRAINING ENGINE COOLANT Drain engine coolant and engi ...