STI Home
Diagnostic Manual, Body and Accessories,
Volume 2

 Printable version
LOCATION:    4.1 Infrared Remote Central Locking (IRCL)   >   23 Electrical Test Program - Test


Electrical Test Program - Test

Test scope Test connection Test condition Nominal value Possible cause/Remedy
1.0   Voltage supply
(circuit 30)


Ground (right wheelhousing in trunk) W7

Wiring (circuit 30)



Voltage supply
(circuit 15)


27




W7


F20-6
Cir. 30




27
N54








N54




9

N54

27

N54

9




14









Disconnect ground wire from .



Ignition: ON


11 - 14 V



< 1



< 1



11 - 14 V


F20-6 (auxiliary fuse holder in trunk)


W7 loose,
Open circuit.


Open circuit.



F1-8 (fuse and relay box).
2.0 Control signal
to CL supply pump (M14/1, M14/2)
Check wiring for short to circuit 31.


27
N54


23


Unplug IRCL control
module (N54).


> 20 k
M14/1, M14/2.
Open circuit in wiring from N54 to M14/1 or M14/2.
2.1 Control signal
CL supply pump (M14/1 or M14/2)
Check wiring for short to circuit 30.


9
N54



23


Disconnect M14/1 or M14/2 and N54.
Disconnect ground wire from .


> 20 k
Open circuit in wiring from N54 to M14/1 or M14/2.
2.2   Taillamp harness connector (X18/9) and wiring from IRCL control module (N54) to CL supply pump (M14/1, M14/2) for open circuit

M14/17


N54
23


Disconnect N54 and M14/1 or M14/2.


< 1
Connector (X18/9) interrupted,
Open circuit in wiring from N54 to M14/1 or M14/2.
3.0 Left front door IR
receiver (A26/1)
Red indicator lamp,
wiring for short to circuit 31


27
N54



1


Disconnect N54.


> 20 k


A26/1,
Open circuit in wiring from N54 to A26/1.
     

27
N54



1


Remove A26/1.


> 20 k


Open circuit in wiring from N54 to A26/1.
3.1   Wiring for short to circuit 30 or open circuit


9
N54



1


Disconnect N54.
Disconnect ground wire from .


> 20 k


A26/1,
Open circuit in wiring from N54 to A26/1.
   

9
N54



1


Remove A26/1.


> 20 k


Open circuit in wiring from N54 to A26/1.
     
A26/1
1


N54

1
 

< 1


Open circuit in wiring from N54 to A26/1.
3.2 Left front door IR
receiver (A26/1)
Green indicator lamp,
wiring for short to circuit 31


27
N54



20


Disconnect N54.


> 20 k


A26/1,
Open circuit in wiring from N54 to A26/1.
     

27
N54



20


Remove A26/1.


> 20 k


Open circuit in wiring from N54 to A26/1.
3.3   Wiring for short to circuit 30 or open circuit


9
N54



20


Disconnect N54.
Disconnect ground wire from .


> 20 k


A26/1,
Open circuit in wiring from N54 to A26/1.
     

9
N54



20


Remove A26/1.


> 20 k


Open circuit in wiring from N54 to A26/1.
     
A26/1
2


N54

20
 

< 1


Open circuit in wiring from N54 to A26/1.
3.4   Left front door IR
receiver (A26/1)
Voltage supply

3
A26/1

7

Connect N54.

11 - 14 V
N54,
Open circuit in wiring from N54 to A26/1.
3.5   Left front door IR
receiver (A26/1)
Signal wire


27
N54



18
Lock vehicle with IR transmitter at left front door and keep button depressed.
After completion of the locking process, read value.
Afterwards, release button and read second value.
Difference of values between button depressed and button released approx.
+0.3 - +0.5 V.
A26/1.
4.0 Right front door IR
receiver (A26/2)
Red indicator lamp,
wiring for short to circuit 31


27
N54



3


Disconnect N54.


> 20 k


A26/2,
Open circuit in wiring from N54 to A26/2.
     

27
N54



3


Remove A26/2.


> 20 k


Open circuit in wiring from N54 to A26/2.
4.1 Wiring for short to circuit 30 or open circuit


9
N54



3


Disconnect N54.
Disconnect ground wire from .


> 20 k


A26/2,
Open circuit in wiring from N54 to A26/2.
     

9
N54



3


Remove A26/2.


> 20 k


Open circuit in wiring from N54 to A26/2.
     
A26/2
6


N54

3
 

< 1


Open circuit in wiring from N54 to A26/2.
4.2 Right front door IR
receiver (A26/2)
Green indicator lamp,
wiring for short to circuit 31


27
N54



10


Disconnect N54.


> 20 k


A26/2,
Open circuit in wiring from N54 to A26/2.
     

27
N54



10


Remove A26/2.


> 20 k


Open circuit in wiring from N54 to A26/2.
4.3 Wiring for short to circuit 30 or open circuit


9
N54



10


Disconnect N54.
Disconnect ground wire from .


> 20 k


A26/2,
Open circuit in wiring from N54 to A26/2.
     

9
N54



10


Remove A26/2.


> 20 k


Open circuit in wiring from N54 to A26/2.
     
A26/2
5


N54

10
 

< 1


Open circuit in wiring from N54 to A26/2.
4.4   Right front door IR
receiver (A26/2)
Voltage supply

7
A26/2

3

Connect N54.

11 - 14 V
N54,
Open circuit in wiring from N54 to A26/2.
4.5   Right front door IR
receiver (A26/2)
Signal wire


27
N54



8
Lock vehicle with IR transmitter at right front door and keep button depressed.
After completion of the locking process, read value.
Afterwards, release button and read second value.
Difference of values between button depressed and button released approx.
+0.3 - +0.5 V.
A26/2.
5.0 Trunk lid IR
receiver (A26/3)
Red indicator lamp,
wiring for short to circuit 31


27
N54



21


Disconnect N54.


> 20 k


A26/3,
Open circuit in wiring from N54 to A26/3.
     

27
N54



21


Remove A26/3.


> 20 k


Open circuit in wiring from N54 to A26/3.
5.1 Wiring for short to circuit 30 or open circuit


9
N54



21


Disconnect N54.
Disconnect ground wire from .


> 20 k


A26/3,
Open circuit in wiring from N54 to A26/3.
     

9
N54



21


Remove A26/3.


> 20 k


Open circuit in wiring from N54 to A26/3.
     
A26/3
6


N54

21
 

< 1


Open circuit in wiring from N54 to A26/3.
5.2 Trunk lid IR receiver (A26/3)
Green indicator lamp,
wiring for short to circuit 31


27
N54



2


Disconnect N54.


> 20 k


A26/3,
Open circuit in wiring from N54 to A26/3.
     

27
N54



2


Remove A26/3.


> 20 k


Open circuit in wiring from N54 to A26/3.
5.3 Wiring for short to circuit 30 or open circuit


9
N54



2


Disconnect N54.
Disconnect ground wire from .


> 20 k


A26/3,
Open circuit in wiring from N54 to A26/3.
     

9
N54



2


Remove A26/3.


> 20 k


Open circuit in wiring from N54 to A26/3.
     
A26/3
5


N54

2
 

< 1


Open circuit in wiring from N54 to A26/3.
5.4   Trunk lid IR receiver (A26/3)
Voltage supply

7
A26/3

3

Connect N54.

11 - 14 V
N54,
Open circuit in wiring from N54 to A26/3.
5.5   Trunk lid IR receiver (A26/3)
Signal wire


27
N54



4
Lock vehicle with IR transmitter at trunk lid and keep button depressed.
After completion of the locking process, read value.
Afterwards, release button and read second value.
Difference of values between button depressed and button released approx.
+0.3 - +0.5 V.
A26/3.
6.0 ATA/CF microswitch (S86s1, S87s1, S88s1)
wiring for short to circuit 30


9
N54



11


Disconnect N54.
Disconnect ground wire from .


> 20 k


Open circuit in wiring to S86s1, S87s1, S88s1 (vehicles up to 11/93),
M14/1 or M14/2 short to circuit 30,
ATA control module (N26),
CF control module (N57).
6.1
 


9
N54



11


Disconnect M14/1 or M14/2.


> 20 k


Open circuit in wiring to S86s1, S87s1, S88s1 (vehicles up to 11/93),
ATA control module (N26),
CF control module (N57).
6.2  

9
N54



11


Disconnect N26.


> 20 k


Open circuit in wiring to S86s1, S87s1, S88s1 (vehicles up to 11/93),
M14/1 or M14/2 short to circuit 30,
ATA control module (N26),
CF control module (N57).
6.3   Vehicles up to 11/93 only

Right front door rotary tumbler microswitch (S87s2)


27
N54



7


Close door to first detent.


< 1


S87s2,
Adjustment.
     

27
N54



7


Close door completely.


> 20 k


S87s2,
Adjustment.
6.4   Vehicles up to 11/93 only

Rotary tumbler/trunk lid microswitch (S88/1)


27
N54



26


Trunk lid open.


< 1


S88/1.
     

27
N54



26


Trunk lid closed.


> 20 k


S88/1.
7.0 Vehicles up to 11/93 only

Ignition/starter
switch (S2/1), Interior/taillamp harness connector (X18/3), Taillamp harness connector (X18/9)
Wiring for open circuit


27
N54



16


Disconnect N54.
Remove key from ignition.


< 1


S2/1,
X18/3 open circuit,
X18/9 open circuit,
Open circuit, wire:
from S2/1 to X18/3,
from S2/1 to W1,
from N54 to X18/9,
from M14/1 to X18/9,
from M14/1 to X18/3.
7.1 Vehicles up to 11/93 only

Wiring for short to circuit 31


27
N54



16


Ignition key in position "1".


> 20 k


S2/1,
X18/3 open circuit,
X18/9 open circuit,
Open circuit, wire:
from S2/1 to X18/3,
from S2/1 to W1,
from N54 to X18/9,
from M14/1 to X18/9,
from M14/1 to X18/3.
8.0 Actuation of left front door actuator (S47)

27
N54



6


Unlock the driver's door.


11 - 14 V


Open circuit in:
Connector X18/9,
Wire from N54 to X18/9,
Wire from M14/1 to X18/9.
9.0 Vehicles up to 11/93 only

Actuation of right front door actuator (S48)


27
N54



17


Unlock the passenger door.


11 - 14 V


Open circuit in:
Connector X18/9,
Wire from N54 to X18/9,
Wire from M14/1 to X18/9.
10.0 Vehicles up to 11/93 only

Actuation of trunk lid lock actuator (S49)


27
N54



25


Unlock the trunk.


11 - 14 V


Open circuit in:
Connector X18/9,
Wire from N54 to X18/9,
Wire from M14/1 to X18/9.
11.0 Vehicles as of 12/93 only

Immobilization output


27
N54



9
Unlock vehicle by pointing IR transmitter toward one of the three IR receivers.

Open driver's window.
Lock vehicle by pointing IRCL transmitter toward one of the three IR receivers.
Ignition: ON



11 - 14 V






< 1 V
Wiring,
1.0, 3.0 - 5.0,
N54.