Test readings, control module connections
| Test readings, control module connections |
| Scope |
The following pages contain readings and instructions for measuring signals and levels on the Trionic control module.
| Remember: |
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Note the test conditions and use your common sense when judging the test results.
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First check that the control module has a power supply and is grounded.
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The specified readings are with the ignition in position ON unless otherwise stated.
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Then check all sensor inputs and signals from other systems.
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Finally, check the control module outputs. Remember that the test readings do not indicate whether the actuator is in working order.
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If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components which ought to be checked more thoroughly.
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The test readings given apply to a calibrated Fluke 88/97.
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The test readings %(+) and ms(+) show the signal's pulse ratio and pulse duration. A test instrument capable of measuring pulse ratio and pulse duration must be used. The sign indicates a positive trigger pulse, TRIG+.
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>= greater than; <= less than; » = approximately equal to; ∼= alternating current
Pins without comments have no pin connection. (LP: LOGIC PROBE P = select pulse; p = perceptible pulses)
| Pin | Cable colour | Component/function | In/Out | Test conditions | Across | Test reading | See |
|
1
|
GN/BK
|
Main relay, 87
|
In
|
|
B+ to 1
|
<0.5 V
|
|
|
4
|
BU/WH
|
Relay, A/C compressor
|
Out
|
825±50 rpm
A/C ON |
4-25
|
<0.5 V
|
|
|
5
|
OG
|
Cruise control B
|
|
Mode ON/OFF |
5-25
|
0 V
B+ |
|
|
6
|
RD/WH
|
Combustion cyl. 3+4
|
In
|
825±50 rpm
|
6-25
|
15-90 Hz
(LP LO HIp) |
|
|
7
|
RD/BU
|
Trigger 1
|
Out
|
825±50 rpm
|
7-25
|
7 Hz
14 ms (-) (LP HI LOp) |
|
|
8
|
VT/WH
|
Trigger 4
|
Out
|
825±50 rpm
|
8-25
|
7 Hz
14 ms (-) (LP HI LOp) |
|
|
9
|
BK/RD
|
Pedal position sensor 2
|
|
Pedal released
Pedal fully depressed |
Use diagnostic tool
|
0.355-1.010 V
3.945-4.600 V |
|
|
10
|
YE
|
Throttle position sensor 2
|
|
Throttle closed
Throttle fully open |
10-70
|
3.910-4.935 V
0.025-1.070 V |
|
|
11
|
BN/OG
|
Manifold absolute pressure sensor
|
|
|
11-22
|
2.1 V at 100 kPa
|
|
|
13
|
BU/BN
|
Charge air control valve
|
|
|
13-25
|
32 Hz
2% (-) 0,5 ms (-) (LP HI LOp) |
|
|
15
|
WH/BK
|
Intake air temperature
|
|
|
15-22
|
Approx. 2.4 V at 20 °C
|
|
|
17
|
YE
|
Crankshaft position sensor
|
|
825±50 rpm
Starter motor cranking |
17-18
|
5-15 V∼
» 800 Hz LP HI LO >2.0 V∼ |
|
|
18
|
BK
|
Crankshaft position sensor
|
|
825±50 rpm
Starter motor cranking |
17-18
|
5-10 V∼
» 800 Hz LP HI LO >2.0 V∼ |
|
|
19
|
WH
|
P-bus -
|
|
|
19-25
|
2-3 V
(LP PHI LO) |
|
|
22
|
BK
|
Sensor ground
|
|
|
22-25
|
< 0.1 V
|
|
|
23
|
RD
|
+30
|
|
|
B+ to 23
|
< 0.5
|
|
|
24
|
BU/RD
|
Throttle motor -
|
|
|
48-24
|
600 Hz
LP HI LO |
|
|
25
|
BK
|
Power ground
|
|
|
25- B-
|
<0.1 V
|
|
|
26
|
BU
|
Main relay
|
|
10 s after ignition OFF |
26-25
|
<0.5 V
B+ |
|
|
27
|
BN/RD
|
EVAP canister purge valve
|
Out
|
825±50 rpm, engine hot and valve active
|
27-25
|
8 Hz
(LP HI LOp) |
|
|
29
|
GN/RD
|
Pedal switch, brake/clutch
|
|
Automatic, position D
Brake or clutch pedal depressed |
29-25
|
B+
0 V |
|
|
30
|
VT
|
Cruise control C
|
|
Mode ON/OFF |
30-25
|
0 V
B+ |
|
|
33
|
GY/RD
|
Throttle position sensor 1
|
|
Throttle closed
Throttle fully open |
33-70
|
0.065-1.090 V
3.930-4.775 V |
|
|
34
|
YE
|
Oxygen sensor 1
|
|
825±50 rpm, hot engine, closed loop active
|
34-58
|
0-1 V
|
|
|
35
|
YE/RD
|
Charge air absolute pressure sensor
|
|
|
35-70
|
2.1 V (100 kPa)
|
|
|
36
|
WH
|
Relay, limp-home solenoid
|
|
|
36-25
|
B+
|
|
|
38
|
OG/WH
|
Knock signal
|
|
|
38-25
|
2.5 V
|
|
|
39
|
WH/GN
|
Coolant temperature sensor
|
|
|
39-22
|
1.0 V (90 °C)
|
|
|
43
|
BU/RD
|
+15
|
|
Ignition OFF |
43-25
|
B+
< 0.5 V |
|
|
44
|
BK/WH
|
Injector 2
|
Out
|
825±50 rpm
|
44-25
|
7 Hz
2,5-4,5 ms (-) (LP HI LOp) |
|
|
45
|
BN/GN
|
Injector 1
|
Out
|
825±50 rpm
|
45-25
|
7 Hz
2,5-4,5 ms (-) (LP HI LOp) |
|
|
46
|
WH/BK
|
5 V
|
|
|
46-70
|
5 V
|
|
|
47
|
BK
|
Power ground
|
|
|
47-B-
|
<0.1 V
|
|
|
48
|
GY/RD
|
Throttle motor +
|
|
|
48-24
|
600 Hz
LP HI LO |
|
|
49
|
VT/WH
|
Oxygen sensor, preheating
|
Out
|
825±50 rpm
|
49-25
|
»
0.3 V
|
|
|
50
|
GN
|
Fuel pump relay
|
|
Starter motor cranking |
50-25
|
<0.5 V
B+ |
|
|
51
|
BU/WH
|
Charge air bypass valve
|
|
Acceleration |
51-25
|
B+
<0.5 V |
|
|
52
|
WH
|
Cruise control A
|
|
Mode ON/OFF |
52-25
|
0 V
B+ |
|
|
53
|
OG/WH
|
Combustion cyl. 1+2
|
In
|
825±50 rpm
|
53-25
|
15-90 Hz
(LP LO HIp) |
|
|
54
|
RD/BU
|
Trigger 2
|
Out
|
825±50 rpm
|
54-25
|
7 Hz
14 ms (-) (LP HI LOp) |
|
|
55
|
YE/BU
|
Trigger 3
|
Out
|
825±50 rpm
|
55-25
|
7 Hz
14 ms (-) (LP HI LOp) |
|
|
56
|
WH/GN
|
Pedal position sensor 1
|
|
Pedal released
Pedal fully depressed |
56-70
|
3.990-4.645 V
0.400-1.055 V |
|
|
58
|
BK
|
Reference ground, oxygen sensor
|
|
|
58-25
|
<0.1 V
|
|
|
62
|
BK
|
Power ground
|
|
|
62- B-
|
<0.1 V
|
|
|
64
|
GY/RD
|
Vehicle speed
|
|
Rotate front left wheel 1/2 rps
|
64-25
|
15 Hz
50 % (LP HIp LOp) |
|
|
65
|
PK/WH
|
Mass air flow sensor
|
|
825±50 rpm
Engine warm A/C OFF electrical equipment turned off |
65-25
|
Approx. 2.1 kHz
|
|
|
66
|
GN
|
P-bus +
|
|
|
66-25
|
2-3 V
(LP PHI LO) |
|
|
67
|
RD/YE
|
Injector 3
|
Out
|
825±50 rpm
|
67-25
|
7 Hz
2,5-4,5 ms (-) (LP HI LOp) |
|
|
68
|
GN/GY
|
Injector 4
|
Out
|
825±50 rpm
|
68-25
|
7 Hz
2,5-4,5 ms (-) (LP HI LOp) |
|
|
69
|
GY/RD
|
5 V
|
|
|
69-22
|
5 V
|
|
|
70
|
GN/RD
|
Sensor ground
|
|
|
70-25
|
<0.1 V
|
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