STI Home
Diagnostic Manual, Body and Accessories,
Volume 6

 Printable version
LOCATION:    19.4 Roll Bar (RB) (Crash Deployment)   >   23 Electrical Test Program - Test


Electrical Test Program - Test

Prior to Test:
1. Review 11, 12, 14, 21, 22 completely.

CAUTION!
Risk of severe injury, ensure that no persons are within the deployment radius of the roll bar during testing and repair.
Fully extend the roll bar prior to performing any repair work. Keep body parts away from the roll bar deployment radius and its mechanism.

CAUTION!
Risk of severe injury, to eyes and skin from escaping high pressure hydraulic fluid spray.
Risk of poisoning due to consumption of hydraulic fluid.
Depressurize the hydraulic system prior to performing repair work
Wear protective clothing and safety goggles.
Electrical wiring diagrams

See Electrical Troubleshooting Manual, Model 202/208, Volume 2,
Group 91

Test scope
Test connection
Test condition Nominal value Possible cause/Remedy
1.0
Power soft top control module (N52)
Voltage supply
Circuit 30
(soft top electronics)


51



52
N52



N52




4



41
 

11 - 14 V



11 - 14 V
Wiring.
1.1   Left rear power window
Circuit 30
Voltage supply


3
N52



40



Operate left rear window.


11 - 14 V
11 - 14 V
Wiring.
1.2   Right rear power window
Circuit 30
Voltage supply


21
N52



38



Operate right rear window.


11 - 14 V
11 - 14 V
Wiring.
1.3   Voltage supply
Circuit 15


51
N52



14
Ignition: ON

11 - 14 V
Wiring.
2.0   Power soft top control module (N52)
Voltage of CAN data lines

Voltage of CAN-LOW line


Voltage of CAN-HIGH line

















N52

19


37
Ignition: ON





3.2 V
(oscillates)

1.8 V
(oscillates)
Wiring,
Control modules of CAN interior bus,
Readout out DTC's via HHT.
If values are OK:
2.1
2.1   Voltage between CAN-LOW and CAN-HIGH data lines


37
N52



19
Ignition: OFF

Ignition: ON

Ignition:OFF,
After approx. 30 sec.
(sleep mode)
--

1.4 V

1.4 V

4.8V
Wiring,
Control modules of CAN interior bus,
Readout out DTC's via HHT.
3.0
RB switch (S83)
(manual operation)
Voltage supply and
signal voltage




N52

54
Ignition: ON

S83 at rest

Press S83 in direction: "Extend" roll Bar

Press S83 in direction:
"Retract" roll bar


11 - 14 V


Approx. 3.8 V


0 - 1 V
If only one value is not OK:
S83

If all 3 values are: 11 - 14 V,
then check:
Wiring,
S83,
3.1
3.1   Resistance







N52

54
Ignition: OFF
Test cable disconnected at N52
S83 at rest

Press S83 in direction:
"Extend" roll bar

Press S83 in direction:
"Retract" roll bar




>20 k



Approx. 250



Approx. 1
If only one value is not OK:
S83

If one or two values are not OK:
Wiring,
or
S83
If values are OK:
N52
4.0   Voltage supply to indicator lamp in S83 from N52



N52
N52

7
Ignition: ON

Switch not pressed
Indicator lamp illuminated.
11 - 14 V
N52
Values are OK, but indicator lamp does not illuminate:
S83
5.0 Overload protection thermocouple (A7/5b1) at hydraulic unit (power soft top)
Resistance measured at N52


32
N52



18
Test cable disconnected at N52
Ignition: OFF
Pump temperature:
25°C
30°C
40°C
120°C






220±22k
178±18k
121±12.5k 10± 2k
Wiring,
5.1
5.1   Resistance as measured at
Hydraulic unit
connector (A7/5x1)


2
A7/5x1



1
Test cable disconnected at N52
Ignition: OFF
Pump temperature:
25°C
30°C
40°C
120°C






220±22k
178±18k
121±12.5k
10± 2k
Overload protection thermo couple (A7/5b1).
6.0
Voltage supply of circuit 30, measured at relay socket of hydraulic
unit (A7/5k1)

4
A7/5k1

2
A7/5k1 is disconnected.
11 - 14 V
Wiring,
If values are OK:
6.1
6.1   Activation of A7/5k1 by N52 as measured at relay socket

4
A7/5k1

6
Roll bar: Retracted
A7/5k1 disconnected.
Turn ignition OFF and then ON.
Press S83 in direction:
"Extend" roll bar









11 - 14 V
Wiring,
6.2,
If values are OK:
6.3
6.2   Activation of A7/5k1 by N52, measured at N52


52
N52




42
Roll bar: Retracted
A7/5k1 connected.
Socket box connected.
Turn ignition OFF and then ON.
Press S83 in direction:
"Extend" roll bar











11 - 14 V
S83,
N52
If values are OK:
Wiring.
6.3   Voltage "load" during voltage supply of circuit 30, measured at relay socket

4
A7/5k1


2
Roll bar: Retracted
A7/5k1 connected.

Press S83 in direction:
"Extend" roll bar







11 - 14 V
Wiring.

If values are OK:
6.4
6.4   Voltage output of A7/5k1, as measured at relay socket

4
A7/5k1


8
Roll bar: Retracted
A7/5k1 connected.
Ignition: ON
Press S83 in direction:
"Extend" roll bar







11 - 14 V
A7/5k1
7.0   Resistance of Hydraulic motor (A7/5m1) as measured at relay socket

A7/5m1

A7/5k1
8
Disconnect A7/5k1 at RB hydraulic unit (power soft top) (A7/5).
Ignition: OFF





Approx. 1
Wiring,
A7/5m1
8.0 RB deployment
solenoid (Y57/1)
Resistance


53
N52




22
Ignition: OFF
Test cable disconnected from N52


Approx. 1



Wiring,
Y57/1
If values are OK:
8.1
8.1   Voltage supply from N52


52
N52




22
Test cable connected to N52
Ignition: ON


11 - 14 V
N52
9.0
RB "retracted" limit
switch (S83/5)
Voltage supply and signal voltage





N52

16
Ignition: ON
Roll bar:
Completely retracted

Roll bar:
Completely extended


0 - 1 V


11 - 14 V
If both values are not OK:
N52
If only one of the values is not OK:
9.1
9.1   Resistance





N52

16
Ignition: OFF
Test cable disconnected from N52
Roll bar:
Completely retracted

Roll bar:
Completely extended




0 - 5




>20 k
Wiring,
S83/5
If values are OK:
N52
10.0
RB "extend" limit
switch (S83/6)
Voltage supply and signal voltage





N52

34
Ignition: ON
Roll bar:
Completely extended

Roll bar:
Completely retracted


0 - 1 V



11 - 14 V
If both values are not OK:
N52
If only one of the values is not OK:
10.1
10.1   Resistance





N52

34
Ignition: OFF
Test cable disconnected from N52
Roll bar:
Completely extended

Roll bar:
Completely retracted






0 - 5


>20 k
Wiring,
S83/6
If values are OK:
N52
Connector layout - Power Soft Top Control Module (N52)



 
    P77.39-2001-10