Group 28
Troubleshooting
MID 128 SID 232 5 Volt DC Sup-
ply, Check
Special tools: J-43233, J-39200, J-41132,
9998534
NOTE!
Check all the particular connectors for loose connections
as well as for switch resistance and oxidation.
For detailed circuit information, refer to “VNL, VNM Elec-
trical Schematics,” Group 37.
Measurement at the component’s
connector, to the EECU
1
Note: An incorrect value (below) can
also cause the component to fail;
therefore, it is important to check the
component if any of the values are in-
correct.
2
Disconnect the individual connectors
to the fuel temperature sensor (D7C
only), boost air temperature/pressure
sensor, coolant temperature sensor,
and oil temperature/pressure sensor.
Install breakout harness 9998534 to
the wiring harness end only.
9998534
Ground wire:
3
Measure the resistance with ohmme-
ter J-39200.
Ignition key must be in the OFF posi-
tion.
Measuring
points
Optimal value
2 / alternate
ground
<1
(coolant
temperature)
4 / alternate
ground
<1
(oil pres-
sure/temperature,
boost air pres-
sure/temperature,
fuel temperature)
J-39200
Supply wire:
4
Measure the voltage with voltmeter J-
39200.
Ignition key must be in the ON posi-
tion.
Measuring
points
Optimal value
1 / alternate
ground
5 V (oil pres-
sure/temperature,
boost air pres-
sure/temperature,
fuel temperature)
J-39200
Check of sub-system
5 V supply to sensors
1
Ignition key must be in the ON posi-
tion.
Connect breakout box J-41132 in se-
ries between connector EA and the
EECU. Connect jumper harness J-
43233 in series between connector EB
and the EECU.
Measuring
points
Optimal value
EA4 / EA5
4.8 - 5.15 V
J-41132
J-43233 J-
39200
189
Summary of Contents for TSI
Page 1: ......
Page 8: ...6...
Page 30: ...Group 28 Specifications Schematic D12B W2002827 28...
Page 31: ...Group 28 Specifications Schematic D12C W2003348 29...
Page 32: ...Group 28 Specifications Schematic D7C W2002826 30...
Page 33: ...Group 28 Specifications Schematic VECU W3003497 31...
Page 34: ...32...
Page 86: ...84...
Page 96: ...Group 28 Troubleshooting 94...
Page 110: ...Group 28 Troubleshooting Fuel Pressure Sensor Pres sure Voltage Chart W2002799 108...
Page 114: ...Group 28 Troubleshooting Oil Pressure Sensor Pres sure Voltage Chart W2002732 112...
Page 118: ...Group 28 Troubleshooting Boost Pressure Sensor Pres sure Voltage Chart W2002730 116...
Page 129: ...Group 28 Troubleshooting Coolant Temperature Sensor Tem perature Resistance Chart W2002729 127...
Page 140: ...Group 28 Troubleshooting Fuel Temperature Sensor Tempera ture Resistance Chart W2002742 138...
Page 144: ...Group 28 Troubleshooting Oil Temperature Sensor Tempera ture Resistance Chart W2002727 142...
Page 248: ......
Page 249: ...Operation Numbers 2841 03 02 01 Engine ECU Replacement 243...