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Diagnostic Manual, Engines, Volume 4

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LOCATION:    9.5 ME - SFI (ME1.0)   >  25 Electrical Test Program - Electronic Accelerator (EA) Test


Electrical Test Program - Electronic Accelerator (EA) Test

Test scope Test connection Test condition Nominal value Possible cause/Remedy
1.0 P 0 5 6 0 Engine control
module (N3/10)
Voltage supply
Circuit 30


26
(1.26)
N3/10



35
(1.35)
Ignition: ON 11 - 14 V 1.1
1.1   Ground wire N3/10

26
(1.26)


39
(1.39)






X11/4
2



2

Ignition: ON 11 - 14 V Wiring,
Model 129:
Ground (W27), module box
bracket.
Model 140:
Output ground (W15), right
footwell.
Model 210:
Electronic ground (W16/6), right component compartment,
1.2
1.2   Voltage supply
Circuit 30

X11/4
1


N3/10

35
(1.35)
Ignition: ON 11 - 14 V Wiring,
Model 129, 140:
Base module (N16/1) or fuse on base module.
Model 210:
Relay module (K40).
2.0 P 0 5 6 0 Engine control
module (N3/10)
Voltage supply
Circuit 87M


38
(1.38)
N3/10



25
(1.25)
Ignition: ON 11 - 14 V 2.1
2.1   Electronic ground N3/10

38
(1.38)





X11/4
2
Ignition: ON 11 - 14 V Wiring,
Model 129, 140:
Electronic ground (W15), right
footwell.
Model 210:
Electronic ground (W16/6), right component compartment,
2.2
2.2   Voltage supply
Circuit 87M

X11/4
1


N3/10

25
(1.25)
Ignition: ON 11 - 14 V Wiring,
Model 129, 140:
Base module (N16/1) or fuse on base module.
Model 210:
Relay module (K40).
3.0 P 0 5 6 0 Engine control
module (N3/10)
Voltage supply
Circuit 87E


39
(1.39)
N3/10



36
(1.36)
Ignition: ON 11 - 14 V Wiring,
Model 129, 140:
Base module (N16/1) or fuse on base module.
Model 210:
Relay module (K40).
4.0 P 1 5 4 2
P 0 5 0 7
Pedal value sensor (B37)
Signal
Nominal value
potentiometer 1


18
(1.18)
N3/10



19
(1.19)
Ignition: ON
Accelerator pedal position:
CTP
WOT



0.2 - 0.5 V
4.3 - 4.8 V
4.1 ,
Wiring,
B37
4.1   Voltage supply
Nominal value
potentiometer 1


18
(1.18)
N3/10



17
(1.17)
Ignition: ON 4.75 - 5.25 V N3/10
5.0 P 1 5 4 2
P 0 5 0 7
Pedal value sensor (B37)
Signal
Nominal value
potentiometer 2


5
(1.5)
N3/10



6
(1.6)
Ignition: ON
Accelerator pedal position:
CTP
WOT



0.1 - 0.4 V
2.1 - 2.5 V
Wiring,
5.1 ,
B37
5.1   Voltage supply
Nominal value
potentiometer 2


5
(1.5)
N3/10



4
(1.4)
Ignition: ON 2.25 - 2.75 V N3/10
6.0 P 0 5 0 7
P 0 1 2 0
P 0 1 8 6
EA/CC/ISC actuator (M16/1)
Signal
Actual value potentiometer 1




Actual value potentiometer 2


98
(2.98)



98
(2.98)
N3/10


N3/10



97
(2.97)



107
(2.107)
Ignition: ON

Accelerator pedal position:
CTP
WOT

Accelerator pedal position:
CTP
WOT




4.0 - 4.6 V
< CTP value



0.3 - 0.9 V
> CTP value
Wiring,
6.1 ,
M16/1
6.1   Voltage supply
Actual value
potentiometers 1 and 2


98
(2.98)
N3/10



106
(2.106)
Ignition: ON 4.75 - 5.25 V N3/10
7.0 P 0 1 8 6
P 1 5 8 0
EA/CC/ISC actuator (M16/1)
Activation of actuator motor


74
(2.74)
N3/10



75
(2.75)
Ignition: ON

Engine: at Idle
ECT > 70°C
1.0 - 2.3 V

1.0 - 2.5 V
Value oscillates.
Wiring,
M16/1,
N3/10
    Resistance (actuator motor)

74
(2.74)
N3/10



75
(2.75)
Ignition: OFF < 10  
8.0 P 0 5 0 0 Left front axle VSS
sensor (L6/1)


38
(1.38)
N3/10



9
(1.9)
Raise front of vehicle.
Ignition: ON
Spin left front wheel by hand.



4 - 8 V ~
Wiring,
ASR or ESP see DM, Chassis & Drivetrain, Vol. 3, section 9 (ASR, ETS, ESP).
9.0 P 0 5 0 0 Left rear axle VSS
sensor (L6/3)


38
(1.38)
N3/10



22
(1.22)
Raise rear of vehicle.
Ignition: ON
Spin left rear wheel by hand.



4 - 8 V ~
Wiring,
ASR or ESP see DM, Chassis & Drivetrain, Vol. 3, section 9 (ASR, ETS, ESP).
10.0   (only until 05/96, as of 06/96 via CAN)

A/C compressor signal



38
(1.38)

N3/10




8
(1.8)
Engine: at Idle

Turn A/C system: ON
Move temperature selector wheel to MIN, blower: ON .
< 1.0 V




11 - 14 V
Wiring,
A/C pushbutton control
module (N22).
11.0   EPC MIL (A1e43)
Activation


21
(1.21)
N3/10



35
(1.35)
Ignition: ON

Engine: at Idle
11 - 14 V

< 1 V
Wiring,
Malfunction in actuator or pedal value sensor,
N3/10