Multiple Systems - Changes For Improved Durability: Overview

89Nissan06

Classification: Section: Engine Fuel &
EF&EC89-004 Emission Control
Reference:
TECHNICAL BULLETIN TS89-072

Models:
1989 240SX
Date:
May 18, 1989

KA24E ENGINE CHANGE


APPLIED MODEL: 1989 240SX (S13) from engine number KA24-012039*

SERVICE INFORMATION

To improve driveability the KA24E engine on the applied model has been changed as follows:
^ Compression ratio has been changed (9.1 to 8.6).
^ Air temperature sensor has been added.
^ E.C.U. has been changed.
^ Idle speed.
^ Self-diagnosis for E.G.R.

The following pages reflect these changes.

CONTENTS
Compression Pressure - Measurement ...................................... 2
- General Specifications............................ 3
Engine and Emission Control Overall System
E.C.C.S. Component Parts Location ................................... 4
System Diagram ...................................................... 5
System Chart ........................................................ 6
Circuit Diagram ..................................................... 7
Engine and Emission Control Parts Description
Air Temperature Sensor .............................................. 8
Engine and Emission Control System Description
Ignition Timing Control ............................................. 9
Swirl Control Valve (S.C.V.) Control ................................ 11
Fail-safe System .................................................... 12
Idle Speed/Ignition Timing/Idle Mixture Ratio Inspection ................ 13
Trouble Diagnoses
Self-diagnosis - Mode III (Self-diagnostic System) .................. 15
Diagnostic Procedure 8 .............................................. 16
Diagnostic Procedure 24 ............................................. 19
Electrical Components Inspection .................................... 21
Service Data and Specifications ......................................... 23

Please reference this Bulletin on the Contents pages of the EM and EF&EC Sections of the 1989 240SX Service Manual.

*Vehicles with an Air Temperature Sensor on the air cleaner box have the modified engine.