Navistar International DT 466 Diagnostic/Troubleshooting Manual page 401

7 ELECTRONIC CONTROL SYSTEMS DIAGNOSTICS
Figure 432 ECT circuit diagram
Operational Voltage Checks for ECT Sensor with Breakout Harness (Check with breakout harness
connected to sensor and engine harness.)
Test Point
2 (Green) to 1 (Black)
2 (Green) to 1 (Black)
2 (Green) to 1 (Black)
2 (Green) to 1 (Black)
Operational Voltage Checks for ECT Sensor with Breakout Box (Check with breakout box connected
[X-1 only] to ECM and engine harness.)
X1–8 to X1–6
X1–8 to X1–6
X1–8 to X1–6
X1–8 to X1–6
ECT Diagnostic Trouble Codes
DTC 114 = Signal voltage was < 0.127 V for more than 0.35 second.
DTC 115 = Signal voltage was > 4.6 V for more than 0.35 second.
DTC 316 = See "Engine Warning and Protection System" (page 440).
DTC 321 = See "Engine Warning and Protection System" (page 440).
DTC 322 = See "Engine Warning and Protection System" (page 440).
DTC 325 = See "Engine Warning and Protection System" (page 440).
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Coolant Temp
108 °C (228 °F)
87.7 °C (190 °F)
0 °C (32 °F)
–17.8 °C (0 °F)
108 °C (228 °F)
87.7 °C (190 °F)
0 °C (32 °F)
–17.8 °C (0 °F)
EGES-270-1
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
Resistance Voltage
1.605 kΩ 0.37 V
3 kΩ 0.65 V
91.1 kΩ 3.86 V
4.25 V
208 kΩ
1.605 kΩ 0.37 V
3 kΩ 0.65 V
3.86 V
91.1 kΩ
208 kΩ 4.25 V
397