PRE-RELEASE
Test readings, control module connections
| Test readings, control module connections |
| Scope |
The following pages contain readings and directions for measuring signals and levels on the Trionic control module.
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Note the test readings, use common sense when assessing the results of the tests.
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The specified values are with the ignition in the ON position unless otherwise stated.
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First, make sure the control module is supplied with power and grounded.
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Then, check all the 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 working.
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If any of the test readings are incorrect, use the wiring diagram to determine which lead, connector or component should be checked further.
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The specified test values apply for a Fluke 88/97.
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The test readings % (+) and ms (+) signify the pulse ratio and pulse length of the signal respectively. A test instrument capable of measuring pulse ratio and pulse width must be used. The sign indicates a positive trigger pulse, TRIG+.
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> = greater than; < = less than; ~= alternating current
Pins without further comments have no connection. (LP: LOGIC PROBE P = select pulse; p = visible pulses).
| Pin | Component/function | In/Out | Test conditions | Across | Test reading | See |
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1
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Main relay, 87
|
In
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B+ to 1
|
<0.5 V
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2
|
Oxygen sensor 2, pre-heating
|
Out
|
Idling Coolant temperature above 50°C
|
2-25
|
approx. 0.3 V
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3
|
Not connected
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4
|
Relay. A/C compressor
|
Out
|
Idle
A/C on |
4-25
|
<0.5 V
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5
|
Cruise B
|
In
|
Position ON/OFF |
5-25
|
0 V
B+ |
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6
|
Combustion cyl. 3+4
|
In
|
Idle
|
6-25
|
15-90 Hz
(LP LO HIp) |
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7
|
Trigger 1
|
Out
|
Idle
|
7-25
|
7 Hz
14 ms (-) (LP HI LOp) |
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8
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Trigger 4
|
Out
|
Idle
|
8-25
|
7 Hz
14 ms (-) (LP HI LOp) |
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9
|
Pedal position sensor 2
|
In
|
Pedal released
Pedal fully depressed |
Use diagnostic tool
|
0.355 - 1.010 V
3.945-4.600 V |
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10
|
Throttle position sensor 2
|
In
|
Throttle closed
Throttle fully open |
10-70
|
3.910- 4.935 V
0.025-1.070 V |
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11
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Manifold absolute pressure sensor
|
In
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11-22
|
2.1 V at 100 kPa
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12
|
Not connected
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13
|
Charge air control valve
|
Out
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13-25
|
32 Hz
2 % (-) 0.5 ms (-) (LP HI LOp) |
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14
|
Not connected
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15
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Intake air temperature
|
In
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15-22
|
Approx. 2.4 V at 20°C
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16
|
Not connected
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17
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Crankshaft position sensor
|
In
|
Idle
Starter motor cranking |
17-18
|
5-15 V~
approx. 800 Hz LP HI LO >2.0V~ |
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18
|
Crankshaft position sensor
|
In
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Idle
Starter motor cranking |
17-18
|
5-10 V~
approx. 800 Hz LP HI LO >2.0V~ |
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19
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P-bus -
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In/Out
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19-25
|
2-3 V
(LP PHI LO) |
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20
|
Not connected
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21
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Not connected
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22
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Sensor ground
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Out
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22-25
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< 0.1 V
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23
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+30
|
In
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B+ to 23
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< 0.5
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24
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Throttle motor -
|
Out
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48-24
|
600 Hz
LP HI LO |
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25
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Power ground
|
In
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25- B-
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< 0.1 V
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26
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Main relay
|
Out
|
10 s after ignition off |
26-25
|
<0.5 V
B+ |
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27
|
EVAP canister purge valve
|
Out
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Idling, warm engine and valve active
|
27-25
|
16 Hz
(LP HI LOp) |
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28
|
Not connected
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29
|
Pedal switch, brake/clutch
|
In
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Automatic position D
Brake or clutch pedal depressed |
29-25
|
B+
0 V |
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30
|
Cruise C
|
In
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Position ON/OFF |
30-25
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0 V
B+ |
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31
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Not connected
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32
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Not connected
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33
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Throttle position sensor 1
|
In
|
Throttle closed
Throttle fully open |
33-70
|
0.065-1.090 V
3.930-4.775 V |
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34
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Oxygen sensor 1
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In
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Idling, warm engine, closed loop active
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34-58
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0-1 V
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35
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Charge air absolute pressure sensor
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In
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35-70
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2.1 V (100 kPa)
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36
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Relay, limp-home solenoid
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Out
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36-25
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B+
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37
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EVAP shut-off valve (certain markets only)
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Out
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Activate ON |
37-25
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B+
<0.5 V |
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38
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Knock signal
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In
|
|
38-25
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2.5 V
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39
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Coolant temperature sensor
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In
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39-22
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1.0 V (90°C)
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40
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Not connected
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41
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Not connected
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42
|
Not connected
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43
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+15
|
In
|
Ignition OFF |
43-25
|
B+
<0.5 V |
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44
|
Injector 2
|
Out
|
Idle
|
44-25
|
7 Hz
2.5-4.5 ms (-) (LP HI LOp) |
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45
|
Injector 1
|
Out
|
Idle
|
45-25
|
7 Hz
2.5-4.5 ms (-) (LP HI LOp) |
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46
|
5 V
|
Out
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46-70
|
5 V
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47
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Power ground
|
In
|
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47-B-
|
< 0.1 V
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48
|
Throttle motor +
|
Out
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48-24
|
600 Hz
LP HI LO |
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49
|
Oxygen sensor 1, pre-heating
|
Out
|
Idle
|
49-25
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approx. 0.3 V
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50
|
Fuel pump relay
|
Out
|
Starter motor cranking |
50-25
|
B+
<0.5 V |
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51
|
Control valve, bypass
|
Out
|
Rev up engine and release accelerator pedal
Acceleration under load |
51-25
|
B+
<0.5 V |
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52
|
Cruise A
|
In
|
Position ON/OFF |
52-25
|
0 V
B+ |
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53
|
Combustion cyl. 1+2
|
In
|
Idle
|
53-25
|
15-90 Hz
(LP LO HIp) |
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54
|
Trigger 2
|
Out
|
Idle
|
54-25
|
7 Hz
14 ms (-) (LP HI LOp) |
|
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55
|
Trigger 3
|
Out
|
Idle
|
55-25
|
7 Hz
14 ms (-) (LP HI LOp) |
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56
|
Pedal position sensor 1
|
In
|
Pedal released
Pedal fully depressed |
56-70
|
3.990- 4.645 V
0.400-1.055 V |
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57
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Oxygen sensor 2
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In
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Idling, warm engine, closed loop active
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57-58
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0-1 V
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58
|
Reference ground, oxygen sensor
|
In
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58-25
|
< 0.1 V
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59
|
EVAP tank pressure valve (certain markets only)
|
In
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Filler cap released and fuel level below sensor
|
59-22
|
2.5 V
|
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60
|
Not connected
|
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61
|
Not connected
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62
|
Not connected
|
62-B-
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< 0.1 V
|
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||
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63
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Brake lights (not cars with ESP)
|
In
|
Brake pedal depressed |
63-25
|
0 V
B+ |
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64
|
Vehicle speed (not cars with ESP)
|
In
|
Rotate front left wheel 1/2 rps
|
64-25
|
15 Hz
50 % (LP HIp LOp) |
|
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65
|
Mass air flow sensor
|
In
|
Idling,
Engine warm, A/C off, electric consumers turned off |
65-25
|
Approx. 2.1 kHz
|
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66
|
P-bus +
|
In/Out
|
|
66-25
|
2-3 V
(LP PHI LO) |
|
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67
|
Injector 3
|
Out
|
Idle
|
67-25
|
7 Hz
2.5-4.5 ms (-) (LP HI LOp) |
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68
|
Injector 4
|
Out
|
Idle
|
68-25
|
7 Hz
2.5-4.5 ms (-) (LP HI LOp) |
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69
|
5 V
|
Out
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69-22
|
5 V
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70
|
Sensor ground
|
Out
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70-25
|
< 0.1 V
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