Honda Bmw 5 Service Manual

Fuel Injection I 
Engine coolant temperature (ECT) sensor, 
testing 
The ECT sensor is located  on the  front  of the  engine  in the 
coolant~thermostat flange.  The ECT sensor is a  dual temper- 
ature sensor.  One circuit provides coolant  temperature infor- 
mation  to the ECM  while the other  circuit provides  coolant 
temperature information  to the  instrument  cluster. 
The ECM determines the correct ignition timing  and 
airlfuel 
mixture required for the  engine by  monitoring an  applied...

130-72 
Fuel Injection 
I Oxygen sensors, replacing 
4 Four Bosch oxygen sensors (2 precatalytic converter sen- 
sors  and 
2 post-catalytic converter  sensors) provide a vary- 
ing voltage signal 
[0.2 vdc  (max. lean)  to 0.8 vdc (max.  rich)] 
to the  ME 
7.2 ECM representing  oxygen content  in the ex- 
haust  gas. 
WARNING- 
Exhaust  manifolds  and pipes can  be hot  enough  to cause  se- 
rious  burns.  Wear suitable heavy gloves  and other appropri- 
ate protection. 
- Using  a special oxygen...

( Mass Air Flow  Sensor 
1 Intake air  temp. (NTC) 
Sensor qround 
Reference voltage . .  . -., f fitr mass signal I 
Fuel Injection I 
Release fuel injector locking clips  (arrow). 
- Remove fuel injector  loom boxes  and lay to one side. 
- Remove 4  fuel rail mounting  fasteners. 
4 Disconnect fuel line  at quick-disconnect.  To disconnect, 
press  in plastic collar  (arrow) and separate fuel  line. 
WARNING - 
Fuel may be expelled underpressure.  Do not srnol(e or work 
near  heaters  or 
other fire...

130-74 
I Fuel Injection 
Evaporative system  pressure leak 
diagnosis, overview 
The  M62 TU engine is  equipped wlth an evaporative  fuel sys- 
tem pressure leak diagnosis system.  The main component  of 
this system is  the leakdiagnosis  pump (LDP). The function of 
the LDP  is to  pressurize the fuel  tank and the evaporative 
emission system  for the purpose of detecting leaks. 
This  system  iscapable  of detecting a 
lealcas small  as0.5  mm. 
The  LDP, located  in the  left rear wheel housing,...

130-75 
Fuel Injection 
Secondary air injection,  overview 
The secondary air  system pumps  ambient air into  the exhaust 
stream  afteracoid  engine start  to reduce  the warm-up  time of 
the  catalytic converters  and to reduces  HC and CO emis- 
sions.  The ME 
7.2 ECM controls  and monitors  the secondary 
air  injection system.  The secondary air pump operates  at a 
starttemperature  of between 10°C 
(50°F) and 40°C  (104°F). 
and  continues  to operate for  a maximum of 
2 minutes  at idle...

130-76 
Fuel Injection 
Bosch 
ME 7.2 ECM pin assignments 
Bosch ME 7.2 ECM connectors 
X60001 
X60002 
X60003 
X60004 
X60005 
Table  e. Bosch  ME 7.2 ECM pin assignments 
Connector 
X60001 
I  I I 
8 1 lnput [Terminal 87 voltage supply I Fuse F1 
9-pin, Black 
24-pin, Black 
52-pin, Black 
40-pin, Black 
9-pin, 
Blaclc 
I I I 
9 I  NO^ used I 
Notes 
Ground connector 
X6460 
Ground connector X6460 
Pin  1 
2  3 
4 
5 
Connector X60002 
Ground connector X6460 6 
Pin 
/Type I Descriptionlfunction 1...

Fuel lnjection 
I 1- I 
4 /output l~em~erature signal. E-box fan I E-box  fan 
Connector 
X60002 (continued) 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
Input 
Input 
Input 
Input 
Ground 
Output  Heated 
oxygen sensor  signal 
Heated oxygen sensor  signal 
Heated  oxygen sensor  signal 
Heated  oxygen sensor signal 
Not  used 
Heated  oxygen sensor, heater ground 
Not used 
Not used 
Not used 
Terminal  85 control 
Not  used  Heated oxygen sensor 
II behind...

I Fuel Injection 
Connector X60003 (continued) Electric throttle actuator 
25 
- 27 28 
29 
30 
31 
32 
33 
I I I 
36 jlnput I Knoclc sensor 2, signal 1 Knock  sensor 
I I I 
Input 
26 
Output 
Output 
input 
Output 
Input 
I  I . I 
43 1 ln~ut I Electric throttle actuator,  signal  (Electric throttle actuator 
Ground, electric throttle actuator 
1 Not 
used 
Hot film mass air flow sensor 
34 
- 37 
38 
39 
40 
41 
42 
injection signal 
Injection 
signal 
VANOS valve, signal 
Not  used 
Thermostat...

Fuel Injection I 
Connector X60004 (continued) 
8 10 
11 
12 
13 
14 
15 
16 
9 
Output 0 
Input 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
33 
34 
35 
36 
39 
llnput lsignal l~oolant outlet temperature sensor 
Output 
Output 
Ground 
Input 
Output 
I I - I 
40 /output Istart signal Istarter relay 
Pedal position sensor (PWG), signal 
Output  Input 
Output 
input 
Input 
Input 
Input 
Input 
Input 
input 
Input 
Output 
Input/-output 
Input/-output 
37 
Connector X60003 
Pedal...

Fuel Injection 
Connector X60005 (continued) 
I I I 
6 /output l~erminal 1 signal ICylinder 1 ignition coil 
Cylinder 
2 ignition 
coil 
Cylinder 
3 ignition  coil 
Ground point 
3 
4 
5 
7 
8 -- 9 
Output 
Output 
Ground  Terminal 1 signal 
Terminal 
1 signal 
Ground 
Output 
Output 
Output  Terminal 
1 signal 
Terminal 
1 signal 
p 
Cylinder 4 ignition  coil 
Cylinder 
5 ignition  coil 
Cylinder 
6 ignition  coil