Volvo TSI, Руководство пользователя, Страница: 214 / 250

Group 28 Troubleshooting
13
Connect an ohmmeter to the wiring
harness connector and measure the
resistance.
Measuring points Expected value
“Normal Open” / alter-
nate ground
1.2 ± 20% k
J-39200
Signal wire, clutch pedal switch:
14
Turn the ignition key to the OFF posi-
tion.
15
Connect an ohmmeter to the wiring
harness connector and measure the
resistance.
Measuring points Expected value
“Normal Open” / alter-
nate ground
1.2 ± 20% k
J-39200
Wiring harness
16
To check the wiring harness, see
“VNL, VNM Electrical Schematics,”
Group 37.
Check of component
•
Idle validation switch
•
Brake pedal switch
•
Clutch pedal switch
Note: Faults in the component can be caused by faults
in the wiring harness of the VECU. A check of the wiring
harness should also therefore be made before connect-
ing a new component.
Check of idle validation switch 1:
1
Disconnect the connector at the accel-
erator pedal. Install 5-pin breakout
harness J-41133 to the accelerator
pedal harness end only.
J-41133
2
Turn the ignition key to the OFF posi-
tion.
3
Connect an ohmmeter to the connec-
tor and measure the resistance.
Measuring points Expected value
Open circuit (accelera-
tor pedal at idle)
Pin D / Pin C
20-90 (full accelera-
tion)
J-39200
Check of the brake pedal switch:
4
Disconnect the connector at the brake
pedal switch (two pin).
5
Turn the ignition key to the OFF posi-
tion.
6
Connect an ohmmeter to the switch
terminals and measure the resistance.
Measuring points Expected value
<1 (brake pedal not
depressed)
“COMMON” / “Normal
Open”
open circuit (brake
pedal depressed)
J-39200
Check of clutch pedal switch:
7
Disconnect the connector at the clutch
pedal switch (two pin).
8
Turn the ignition key to the OFF posi-
tion.
9
Connect an ohmmeter to the switch
terminals and measure the resistance.
Measuring points Expected value
<1 (clutch pedal not
depressed)
“COMMON” / “Normal
Open”
open circuit (clutch
pedal depressed)
J-39200
212