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There are three levels of identifying a malfunction in the ECU or the sensors.
Level 1 Visual
This is indicated by the lamp in the MIL glowing continuously. Check for any sensor loose connections
and plug in properly. If still MIL GLOWS, then check for the the problem by Test Pin or by DOL TOOL.
Level 2 Test pin
An open single pole connector is provided close to the UCE. By inserting a piece of wire into this
connector and grounding it to an earth, the defective sensor can be identified by the following frequency
of the MIL blinking.
MIL BLINK
MIL will glow continuous. Engine will start but not perform to its potential.
LONG 0 SHORT 6
LONG 0 SHORT 9
LONG 1 SHORT 1
LONG 1 SHORT 7
LONG 4 SHORT 5
MIL will glow continuous. Engine will NOT Start but will crank.
LONG 1 SHORT 5
LONG 3 SHORT 3
LONG 3 SHORT 7
LONG 4 SHORT 1
LONG 6 SHORT 6
MAL FUNCTION INDICATION
Throttle Position Sensor (TPS) circuit malfunctioning
Manifold Absolute Pressure (MAP) circuit malfunctioning
Engine oil Temperature (TE) circuit malfunctioning
O2 Sensor circuit malfunctioning
O2 Sensor heater circuit malfunctioning
Rollover Sensor circuit malfunctioning
Injector circuit malfunctioning
Ignition Coil circuit malfunctioning
Fuel Pump circuit malfunctioning
Crankshaft position circuit malfunctioning
06-10
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