Diagnostic Manual, Engines, Volume 4
Electrical Test Program - Electronic Accelerator (EA) Test
 WARNING!
Risk of severe injury when touching ignition parts which produce high voltages. Do not touch ignition components.
Persons with heart pacemakers are not to perform repairs on this type of ignition system.
1. Review  22 entirely, prior to performing this test section.
|
 |
 |
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/remedy |
| 1.0 |
P 1 5 4 2
P 0 5 0 7 |
Pedal value sensor (B37)
Signal
Nominal value
potentiometer 1
|
15 
(23C) |
N3/10
 |
 16
(24C)
|
Ignition: ON
Accelerator pedal
position:
CTP
WOT or kick-down
|
0.2 - 0.5 V
4.3 - 4.8 V |
1.1 ,
Wiring,
B37 |
| 1.1 |
|
Voltage supply
Nominal value
potentiometer 1
|
15
(23C) |
N3/10
|
14
(22C)
|
Ignition: ON |
4.75 - 5.25 V |
Wiring
N3/10 |
| 2.0 |
P 1 5 4 2
P 0 5 0 7 |
Pedal value sensor (B37)
Signal
Nominal value
potentiometer 2
|
18
(26C) |
N3/10
|
17
(25C)
|
Ignition: ON
Accelerator pedal
position:
CTP
WOT and kick-down
|
0.1 - 0.4 V
2.1 - 2.5 V |
2.1 ,
Wiring,
B37 |
| 2.1 |
|
Voltage supply
Nominal value
potentiometer 2
Test step not valid for pedal value sensor with hall effect.
|
18
(26C) |
N3/10
|
19
(27C)
|
Ignition: ON |
2.25 - 2.75 V |
Wiring
N3/10 |
| 3.0 |
P 0 5 0 7
P 0 1 2 0
P 1 1 8 6
P 1 5 8 0 |
EA/CC/ISC actuator (M16/6)
Signal
Actual value potentiometer 1
Actual value potentiometer 2
|
88
(32E)
88
(32E)
|
|
87
(31E)
90
(34E) |
Ignition: ON
Accelerator pedal
position:
CTP
WOT or kick-down
Accelerator pedal
position:
CTP
WOT or kick-down
|
4.0 - 4.6 V
< CTP value
0.3 - 0.9 V
> CTP value
|
3.1 ,
Wiring,
M16/6 |
| 3.1 |
|
Voltage supply
Actual value
potentiometers 1 and 2
|
88
(32E) |
N3/10
|
89
(33E)
|
Ignition: ON |
4.75 - 5.25 V |
Wiring,
N3/10 |
| 4.0 |
P 1 1 8 6
P 1 5 8 0 |
EA/CC/ISC actuator (M16/6)
Activation of actuator motor
|
105
(1F)
|
N3/10
|
106
(2F)
|
Ignition: ON
Engine: at Idle
ECT > 70 oC |
0.8 - 2.3 V
1.0 - 2.5 V
Value oscillates. |
Wiring,
M16/6
N3/10 |
| |
|
Resistance of actuator motor |
105
(1F) |
N3/10
 |
106
(2F)
|
Ignition: OFF |
< 10  |
|
| 5.0 |
|
P/N recognition
Transmission: 722.4/6 |
51
(19D) |
N3/10
|
2
(2A)
|
Ignition: ON
Selector lever position:
P/N 
R, D, 4, 3, 2, 1 |
11 - 14 V
< 1.5 V
|
Wiring,
See DM, Chassis and Drivetrain, Vol. 1, section 2.3 |
| 6.0 |
|
Manual Transmission only
Clutch engage/release switch (S40/2)
Signal |
51
(19D) |
N3/10
|
2
(2A)
|
Ignition: ON
Clutch pedal not depressed:
Clutch pedal depressed: |
< 1.0 V
11 - 14 V
|
Wiring,
S40/2 |
| 7.0 |
|
Manual Transmission only
Backup lampswitch (S16/2)
Signal |
3
(3A) |
N3/10
|
46
(14D)
|
Ignition: ON
Reverse gear not engaged:
Reverse gear engaged: |
< 1.0 V
11 - 14 V
|
Wiring,
S16/2 |
|
Printable version
