11. EFI SYSTEM OF SQR 472ENGINE
11-34
Chapter 3
Introduces the function of fault diagnosis system
The electronic control unit continuously monitoring sensor, actuator, circuit, fault indicating lamp
and battery voltage and so on, and the electronic control unit itself, and the actuator driving signal
and the internal signal of the sensor output signal, (such as closed loop control, coolant temperature,
the idle speed control and battery voltage control) for reliability detection. Once found a link failure,
or a signal value is not trusted, the electronic control unit immediately set up fault information
recorded in the fault memory in the RAM. Fault recording information stored in the fault code form,
has the display order according to the faults.
According to the fault frequency can be divided into "fault" and "breakdown" (such as wire harness
circuit transient
Due to poor contact or connector).
1 control, fault lamp
When no fault
★
ignition switch ON, fault light;
★
fault detection speed signal lamp;
When there is a fault
★
ignition switch ON, fault light;
★
starting, find the speed signal out, if the fault lamp fault class is defined as a light mode, then
meet the corresponding
Confirmation conditions after the fault light;
To connect 2, diagnostic instrument
This system uses the "K" line of communication protocol, and uses the ISO 9141-2 standard
diagnostic connector, see below. The criteria for the diagnosis of joint is fixedly connected on the
engine wire harness. With the engine management system EMS is the standard diagnostic connector
on the 4, 7 and 16 pin. Criteria for the diagnosis of joint 4 pin connected wire on the vehicle; 7 pins
connected to a ECU 77 pin, namely engine data "K" line; 16 pin connected battery.
Figure ISO9141-2 standard diagnostic connector (connected to the engine control unit side)
The ECU communicates with external diagnostic device through the "K" line, and can perform the
following operations:
(the function and diagnosis instrument operation refer to "diagnostic instrument using the")
1), the engine parameter display
1, rotational speed, coolant temperature, solar term door opening, ignition advance angle, injection
pulse width, inlet pressure, inlet temperature, speed, voltage, injection correction, the carbon
canister erosion rate, the idle air control, oxygen sensor waveform;
Summary of Contents for 1100 GKE OutLaw
Page 1: ...Service Manual 1100GKE 4 4...
Page 62: ...4 COOLING SYSTEM 4 6 Cooling System Chart...
Page 158: ...10 CVT TRANSMISSION SYSTEM 10 7 5 Appearance installation dimension map Fan shaped array 10...
Page 165: ...11 EFI SYSTEM OF SQR 472ENGINE 11 3 3 The ECU control principle diagram...
Page 166: ...11 EFI SYSTEM OF SQR 472ENGINE 11 4 4 The ECU function module layout...
Page 260: ......