Land Rover Bosch 5 2 1 Engine Management Systems Rover Manual

							BOSCH 5.2.1 ENGINE MANAGEMENT SYSTEM
Bosch 5.2.1 Engine Management System 167 Connector 3
C0636 (52-way, Black)     
PIN Wire
ColorDescription Signal
RangePIN Wire
ColorDescription Signal
Range
1 YW Injector  # 2 driver,  sw. -Earth 0V 27 YB Injector  # 3 driver,  sw. - Earth 0V
2 YG Injector # 5 driver, sw. -Earth 0V 28 YK Injector #8 driver, sw. -Earth 0V
3 NR Purge valve driver [PWM] 12-0V 29 SP Hill descent control [PWM] 0-12V
4 SAI Valve solenoid 12-0V 30 SY Can. vent solenoid, sw. - Earth 0V
5 - 31 GW Air cond. condenser fan drive  0V
6 RB Fuel Tank pressure sensor Earth 0V 32 BY Crankshaft sensor signal 0-300V
7 R Air flow meter 5V supply  5V 33 -
8 - 34 SLG Air temperature signal 0-5V
9 RB Air flow meter earth 0V 35 W Knock sensor Bank B Earth 0V
10 R Throttle Pot 5V Supply  5V 36 KB Knock sensor Bank B Input Analog
11 - 37 -
12 - 38 -
13 - 39 -
14 YR Injector  #7 driver / sw - Earth 0V 40 YN Injector  # 4 driver,  sw. -Earth 0V
15 YS Injector #6 driver / sw - Earth 41 YU Injector  # 1 driver,  sw. -Earth 0V
16 SAI Pump Relay 12-0V 42 US Idle speed actuator open 12-0V
17 B Cam Sensor earth 0V 43 RG Idle speed actuator close 12-0V
18 - Low Range Switch(Manual only) 12-0V 44 GU Coolant Temperature output 0-12V
19 - 45 SCR CKP shield Ground 0V
20 SU Camshaft sensor Input signal 0-12V 46 KB CKP Ground Ref.  0V
21 RB Coolant sensor Earth 0V 47 -
22 G Coolant temperature signal Input  0-5V 48 B Knock sensor Bank B Earth 0V
23 UG Air flow meter signal Input 0-5V 49 KW Knock sensor Bank A Input Analog
24 YLG TPS signal 0-5V 50 -
25 RB TPS Ground 0V 51 -
26 - 52 - 
						

							BOSCH 5.2.1 ENGINE MANAGEMENT SYSTEM
168 Connector 4
C0637 (40-way, Black)
PIN Wire 
ColorDescription Signal
RangePIN Wire
ColorDescription Signal
Range
1- 21-
2 - 22 KG Road speed Signal [PWM]  0-12V
3- 23-
4- 24-
5- 25-
6 RK T-box Low Range Switch 0V=
Low box26 -
7- 27-
8 GS Low Fuel Signal Active=
High28 -
9 R Fuel Tank pressure sensor
Vref5V 29 BS A/C. compressor “Grant”
 switch to earth0V
10 - 30 -
11 - 31 -
12 Analogue Fuel Level 0-5V 32 K Diagnostic K-Line  Serial com.  0-12V
13 - 33 LGS Immobiliser serial W-link 0-12V
14 GK Fuel Tank pressure signal 0-5V 34 RG Rough Road signal [PWM] 0-12V
15 - 35 -
16 YS A/Conditioning request Input Active=
Low36 W CAN bus ‘high’ line
Bi-directional comms.5-2.5V
17 WS Engine speed output 0-5V 37 Y CAN bus ‘low’ line
Bi-directional comms.0-2.5V
18 - 38 PW A/C stand-by Signal Active=
Low 
19 - 39 -
20 RS MIL ‘on’ Output;
 “ON” = earth0V 40 - 
						

							BOSCH 5.2.1 ENGINE MANAGEMENT SYSTEM
Bosch 5.2.1 Engine Management System 169 Connector 5
C0638 (9-way, Black)
PIN Wire 
ColorDescription Voltage Reading
1-
2 U Ignition driver, Cyl # 2 , 3 Output Switch to Earth
3-
4-
5 B Ignition Coil Ground  0V 
6 KB Ignition driver, Cyl # 1 , 6 Output Switch to Earth
7 WU Ignition driver, Cyl # 4 , 7 Output Switch to Earth
8 R Ignition driver, Cyl # 5 , 8 Output Switch to Earth
9- 
						

							BOSCH 5.2.1 ENGINE MANAGEMENT SYSTEM
170