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Group 28 Troubleshooting
MID 144 PPID 69 Idle Validation
Switch, Check
Other special equipment: J-39200, J-41132,
J-43234, J-43233, 9998551, J-43340
NOTE!
•
Read off the other fault codes for the VECU.
•
Check the particular connectors during the fault
tracing for oxidation and switch resistance. For
detailed circuit information, refer to “VNL, VNM Elec-
trical Schematics,” Group 37.
Appropriate Tests in the VCADS
Pro Tool
The following test(s) are useful for closely examining the
component’s function:
N/A No test currently available.
Measurement at the Component’s
Connector, to the VECU
Note: Faults in the wiring harness to the VECU can
damage the component. Therefore, a check of the com-
ponent should be made if any of the measurements
deviate from the expected values.
1
Disconnect connector (EA and EB) at
the engine electronic control unit
(EECU).
2
Connect jumper J-43233 between
EECU’s EA (upper) connector and the
wiring harness.
J-43233
3
Connect the 36-pin breakout box J-
41132 between the EECU’s EB (lower)
connector and the wiring harness.
J-41132
Signal Wire:
4
Turn the ignition key to the ON posi-
tion.
5
Connect voltmeter J-39200 to the 36-
pin breakout box at pin 4 (buffered idle
validation switch) and pin 9 (ground).
Measuring points Expected value
0 V (accelerator pedal
at idle)
EB4 / EB9
B+ (accelerator pedal
above idle)
J-39200
Wiring harness
6
To check the wiring harness, refer to
“VNL, VNM Electrical Schematics,”
Group 37.
Check of component — buffered
idle validation switch
Note: Faults in the component can be caused by faults
in the wiring harness of the VECU. Therefore, a check of
the wiring harness should be made before connecting a
new component.
1
Disconnect connector (EA and EB) at
the EECU.
2
Connect jumper J-43233 between
EECU’s EA (upper) connector and the
wiring harness.
J-43233
3
Connect the 36-pin breakout box J-
41132 between the EECU’s EB (lower)
connector and the wiring harness.
J-41132
4
Turn the ignition key to the OFF posi-
tion.
5
Using ohmmeter J-39200 at the 36–
pin breakout box, measure resistance
from pin 4 to pin 9.
Measuring points Expected value
EB4 / EB9 2.9 ± 20% k
J-39200
208