Engine Electrical System

Installation: to be fixed by the support of bracket
under pilot trench of front windshield. Pay attention to
waterproofing.
Functions:
Multipoint sequential injection
Controlling ignition
Idle speed control
Independent knocking control on cylinder-by-cylinder
basis (knock sensor KS-1);
Providing sensors with power supply: 5V/100mA
Adopting cylinder-detecting signal (Phase sensor PG1)
λclosed-loop control with self-adaptation
Controlling carbon canister control valve
Air conditioning switch
Engine-fault indicating lamp
Fuel quantitative correction
Engine speed signal output (TN signal)
Speed signal input
Failure self-diagnosis with flash code function
Accepting engine load signal
Troubleshooting: due to the fact that ECU (electric
control unit) has low failure rate, so generally it is not
advisable to replace ECU for troubleshooting on any
problem. Failure of components such as periphery
circuit and sensors shall be checked and solved firstly.
Do not replace ECU until all periphery components
are confirmed to be fault-free.
Description of pins of ECU:
Pin Connection point Type Pin Connection point Type
1 Heated oxygen sensor Output 42 A/C temperature sensor Input
2 Ignition coil 2 Output 43
3 Ignition ground wire Ground 44
Non-sustained power
supply
Input
4 45
Non-sustained power
supply
Input
5 Ignition coil 1 Output 46 Carbon canister Valve Output
E-13
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