1402-1403 / 1904
ELECTRICAL
CIRCUIT SCHEMATIC OF EMS ECU (SHEET 5 OF 5)
BOSCH 112 pin ECU -Connectors & Pin Defination – Engine Side ECU Connector 2
BOSCH 112 pin ECU - Connectors & Pin Defination – Engine Side ECU Connector
Pin No
Pin Description
I/O Active
Current
Limitati
on
Comment
Pin No
Pin Description
I/O Active Current
Limitation Comment
201
Crankshaft Sensor (-)
I
-
-
229
Not used
202
Lambda Downstream (O2 sensor Signal 2)
I
Analog -
230
Lambda Upstream (O2 sensor Signal 1)
I
Analog
-
203
Throttle Position Sensor 1 Signal
I
Analog -
231
Cam sensor signal
I
-
-
204
Sensor ground 9 for Oxygen Sensors (Pre CAT)
Gnd
-
-
Ground
232
Vehicle Speed Signal
I
-
-
PWM Signal
205 Sensor Ground 5 for Coolant Temperature & Boost Press. Sensors Gnd
-
-
Ground
233
Alternator DF signal
I
-
-
PWM Signal
206
Sensor Ground 6 for Oxygen Sensors (Post CAT) Sensor
Gnd
-
-
234
Not Used
207
Sensor Ground 7 for Motorized Throttle Sensor
Gnd
-
-
235
Canister Purge Valve
O Low
1A PWM Signal
208 Sensor Ground 8 for CNG Rail Press. & Temp. sensor and Cam Sensor Gnd
-
-
236
Gasoline \CNG Mode LED on Instrument Cluster
O PWM 1A
To IC
209
Not Used
237
Knock Sensor (+)
I
-
-
210
5V Sensor supply1 for Spare
O High
-
238
Knock Sensor (-)
I
-
-
211
Not Used
239
Heating Lambda Sensor Downstream (O2 CAT Heater 2)
O Low
PWM Signal
212
CNG Gas Injector 2
O Low 1A PWM Signal
240
CNG Pressure Regulator
O Low
2A PWM Signal
213
Crankshaft Sensor (+)
I
-
-
241
Stepper Driver B
l
O High 600mA
214
Not Used
242
CNG Fuel level Lamp on Instrument Cluster
O PWM 1A
215
Coolant Temperature Signal
I
Analog -
243
Fuel Injector 2
O Low
1A PWM Signal
216
Spare Analog
I
-
244
Fuel Injector 1
O Low
1A PWM Signal
217
Oil Temperature Signal
I
Analog -
245
Starter Inhibit Relay
O PWM 1A
218
S
I
A l
246
H ti
L bd S U t
(O2 CAT H t 1)
O L
PWM Si
l
pare
na og -
ea ng am a ensor ps ream
ea er
ow
gna
219
Reverse Gear Signal
I
High
-
247
Power Ground 4
Gnd
-
-
Ground
220
Spare Input
I
Analog -
248
Spare
O -
-
221
Not used
249
Spare
222
Not used
250
Power Ground 1
Gnd
-
-
Ground
223
+3.3V sensor supply to Motorized Throttle sensor
O -
-
251
CNG Tank Valve 2 Command
O Low 850mA
224
CNG Gas Injector 1
O Low 1A PWM Signal
252
CNG Tank Valve 5 Command
O Low 850mA
225
CNG Rail Pressure Signal
I
Analog -
253
Spare
226
CNG Rail Temperature Signal
I
Analog -
254
Spare
M Signal
O Low
PW
227
Manifold Air Temperature Signal
I
Analog -
255
Spare
228
Not used
256
Ignition Coil 1
O Low
PWM Signal
Ground
PWM Signal
ON/OFF Signal