Malf History
This is to show the mal-function codes have ever occurred after the ECU key-on. The codes will be cleared after ECU key-off.
Idle RPM Adjust
This is to carry out idle adjustment after vehicle off the line. The adjustment of “idle adjust screw” will be done as first
priority. SA adjustment will then be used if the idle adjust screw has been rotated for more than 2 turns.
The following conditions need to be met in idle adjustment:
1. No mal-function codes as below
P0112 (IAT grounded)
P0113 (IAT short / open)
P0117 (CLT grounded)
P0118 (CLT short / open)
2. Engine in idle mode
3. In take air temperature within specified range
4. Engine temperature within specified range
5. Diagnostic tool in connection
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