Brixton BX125, Руководство по обслуживанию

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14.4.2.2 Step 2
Whether ECU power supply if off - The communication between the diagnosis tester and the system is
interrupted after lock switch is turned off.
14.4.2.3 Step 3
a) The temperature and temperature cycle of coolant liquid can indicate whether the thermostat is working
properly
；
b) Accumulator voltage can indicate whether the generator is in normal operation
；
If higher, the generator regulator may break down
；
If lower, the generator may improperly connected or break down;
c) Intake manifold pressure can indicate whether there is air leakage or valve clearance;
If valve clearance is too small, the pressure is high and may affect the dynamic performance of the
engine, and due to earlier opening of exhaust valve, exhaust temperature increases, greatly shortening the
service of oxygen sensor and three-way catalytic converter;
If valve clearance is too large, the pressure is low and may affect the system to judge the working status
of the engine, thereby causing idle speed exception f hot car;
In addition, the pressure will be increased if the exhaust system is blocked, e.g., exhaust port has foreign
matter and three-way catalytic converter is blocked due to high fuel consumption, and further the exhaust
port is blocked due to broken catalytic converter;
d) As for the number of oxygen sensor cycles, less cycle indicates the failure of oxygen sensor.
14.4.3 Simple troubleshooting methods
EFI system shall be repaired in the following sequence. If it is necessary to repair fault in some step, the
subsequent steps may be suspended, and the diagnosis tester is used for inspection, acceptance and the removal
of fault codes as per article 14.3.
In the operation of diagnosis tester, the accumulator voltage shall not be less than 8.5 volts.
16.4.3.1 Daily use and maintenance

92# or 95# high-quality unleaded gasoline can be adopted.

ECU is moisture-proof, but its shell may not be washed by water cannon.

Gasoline filter is replaced every 7,000 ~ 10,000km.

Under normal service conditions, throttle valve is cleaned every 10,000kg or 1 year.
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