Engine Control Component Description - Isuzu N 2008 Series Workshop Manual

1A-358 Engine Control System (4JJ1)
• The MIL remains illuminated after the engine is
started if the ECM detects a fault. A DTC is stored
any time the ECM illuminates the MIL due to an
emission related fault (Euro 4 specification), and
engine performance related fault has occurred
(except Euro 4 specification).
Except Euro 4 specification with speed limiter device
Ignition switch ON
ON
OFF
15 sec.
Service Vehicle Soon (SVS) Lamp Operation (Euro
4 Specification)
The service vehicle soon (SVS) lamp is located in the
instrument panel cluster. The SVS lamp will display the
vehicle with wrench symbol when commanded ON:
The SVS lamp indicates that an non-emission related
fault (Type C DTC) has occurred and vehicle service
required. The following is a list of the modes of
operation for the SVS lamp:
• The SVS lamp illuminates when the ignition switch
is turned ON, with the engine OFF. This is a lamp
test to ensure the SVS lamp is able to illuminate.
1 sec. 1 sec. 1 sec.
1 sec. 1 sec. 1 sec.
LNW76ESH006201
LNW81ASH000301
• The SVS lamp illuminates for approximately 15
seconds and blinks 3 times when the ignition
switch is turned ON, with the engine OFF. This is a
lamp test to the SVS lamp is able to illuminate and
a speed limiter device installation check. (with
speed limiter device)
• The SVS lamp turns OFF after the engine is
started if a diagnostic fault is not present.
• The SVS lamp remains illuminated after the engine
is started if the ECM detects a fault. A DTC is
stored any time the ECM illuminates the SVS lamp
due to a non-emission related fault.
Euro 4 specification with speed limiter device
Ignition switch ON
ON
OFF
15 sec.

Engine Control Component Description

Accelerator Pedal Position (APP) Sensor
•
1
Legend
1. Accelerator pedal bracket
2. Accelerator pedal position (APP) sensor
3. Accelerator pedal
1 sec. 1 sec. 1 sec.
1 sec. 1 sec. 1 sec.
LNW76ESH006301
2
3
LNW81ASH000801