Nissan Murano: System / Air Conditioning Cut Control

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / System Description / System / Air Conditioning Cut Control

System Description

SYSTEM DIAGRAM

*: ECM determines the start signal status by the signals of engine speed and battery voltage.

SYSTEM DESCRIPTION

This system improves engine operation when the air conditioner is used.

Under the following conditions, the air conditioner is turned OFF.

When the accelerator pedal is fully depressed.
When cranking the engine.
At high engine speeds.
When the engine coolant temperature becomes excessively high.
When operating power steering during low engine speed or low Nissan Murano vehicle speed.
When engine speed is excessively low.
When refrigerant pressure is excessively low or high.

Electric Ignition System

System Description SYSTEM DIAGRAM*: ECM determines the start signal status by the signals of engine speed and battery voltage.SYSTEM DESCRIPTIONIgnition order: 1 - 2 - 3 - 4 - 5 - 6The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the engine...

Automatic Speed Control Device (ascd)

System Description SYSTEM DIAGRAMBASIC ASCD SYSTEMRefer to Owner's Manual for ASCD operating instructions.Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed without depressing accelerator pedal...

Other information:

Nissan Murano (Z52) 2015-2024 Service Manual: Preparation. Preparation

Nissan Murano (Z52) 2015-2024 Service Manual: B272d Front Buzzer

DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition B272D–12 FRONT BUZZER (Sonar buzzer) — Diagnosis condition When ignition switch is ON Signal (terminal) Sonar buzzer power circuit (terminal 19) Sonar buzzer signal (terminal 18) Threshold Sonar buzzer power circuit is short to voltage Sonar buzzer signal circuit is short to voltage Diagnosis delay time — B272D–14 Diagnosis condition When ignition switch is ON Signal (terminal) Sonar buzzer power circuit (terminal 19) Sonar buzzer signal (terminal 18) Threshold Sonar buzzer power circuit is open or short to ground Sonar buzzer signal circuit is open or short to ground Diagnosis delay time — POSSIBLE CAUSE Harness or connectors Sonar buzzer FAIL-SAFE Off indicator blinks periodically (500ms ON, 500ms OFF)...