ECM
The ECM is located behind the Centre Consol on the Applause.
On the Feroza it is located behind the Right hand Kick Panel .
The ECM incorporates a self diagnosis facility.
When an out of range signal occurs,
A fault code is logged and recorded in the ECM and the Check Engine Light is illuminated.
With intermittent faults, the Check Engine Light may extinguish,
However, the fault code will remain stored in the ECM unless it is erased.
ECM Voltage table
Pin# Circuit Condition Status Voltage
Connector "A"
A1 Earth All Times 0 Volts
A2 Injectors Ignition ON Battery Volts
Engine cranking or running Voltage Pulses
A3 ECM Power Supply Ignition ON Battery Volts
A4 Backup Power Supply All Times Battery Volts
A5 Idle Up VSV Ignition ON Engine @ operating Temperature Battery Volts
Idle Up VSV ON < 3 Volts
Engine speed held steady @ 3000 RPM approx
A6 Oxygen Sensor Test Connector Engine @ operating temperature Engine speed held steady @ 3000 RPM approx
Switching > 8 times in 10 seconds 0.5 Volts approx.
A7 Earth All Times 0 Volts
A8 Injectors Ignition ON Battery Volts
Engine cranking or running Voltage Pulses
A9 ECM Power Supply Ignition ON Battery Volts
A10 Check Engine Light (CEL) Ignition ON + CEL pin shortcut < 3 Volts
Engine running CEL OFF Battery Volts
A11 Fuel Pump Relay Ignition ON Fuel Pump operating < 1 Volts
Fuel Pump NOT operating Battery Volts
A12 Earth All Times 0 Volts
Connector "B"
B1 Ignition Signal Ignition ON Battery Volts
Engine cranking or running Voltage Pulses
B2 Starter Motor Signal Engine cranking 6.0 to 15.5 Volts
B3 Diagnostic Connector Test Terminal Ingnition ON Battery Volts
B4 Idle Switch Ignition ON Throttle closed 1.0 Volts or less
Throttle open Battery Volts
B5 Electrical Load Signal Headlaps ON Battery Volts
Demister ON Battery Volts
All Other Times 0 Volts
B6 MAP sensor Power Supply Ignition ON 4.5 to 5.5 Volts
B7 MAP Sensor Ignition ON, Engine OFF 3.2 to 3.8 Volts
B8 Intake Air Sensor Surge Tank Air Temp. @ 20°C Ignition ON 0.9 to 3.0 Volts
B9 Engine Coolant Temp. Sensor Engine Coolant Temp. @ 80-90°C Ignition ON 0.4 to 0.5 Volts
B10 MAP Sensor Earth All Times 0 Volts
B11 Air Conditioner Clutch Ignition ON 0 Volts
Air Conditioner ON Battery Volts
B13 Transmission Detection Ignition ON Manual Vehicles. Battery Volts
(Applause Only) Automatic Vehicles 0 Volts
B14 Vehicle Speed Sensor Ignition ON Vehicle stationary 0 or Battery Volts
Front wheels rotating 0 to Battery Volts fluctuations
B15 Transmission Shift Position Switch Ignition ON D, 2,L or R selected 1.0 Volts or less
(Applause Automatic Only) P or N selected Battery Volts
B16 Throttle Position Sensor Power Switch Ignition ON Throttle Closad 4.5 to 5.5 Volts
Trhottle Open 1.0 Volts or less
B17 Oxygen Sensor Engine @ operating temperature Switching > 8 times in 10 seconds
Engine speed held steady @ 2000 RPM approx. 0 and 1 Volts
B18 Sensor Ground Ignition ON 0 Volts
