Error Messages and Codes 3-85
Environmental Sensor Failure
Code 102: Indicates an error was detected in the environment sensor circuit.
7
Replace the EEPROM board, PL 10.1.14.
Does the error recur after the EEPROM
board, has been replaced?
Go to Step 8. Complete
8
Check J710 <=> J71 of the CRUM
Harness for continuity.
Go to Step 9. Replace the
CRUM Harness,
PL 10.1.12.
9
Check J71 <=> J140 of the EEPROM
Harness for continuity.
Replace the Engine
Control Board,
page 8-107.
Replace the
EEPROM
Harness,
PL 13.1.10.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
Temperature/Humidity Sensor, PL 3.2.2 “Xerographics 1” on page 10-23
Temp/Humidity Harness, PL 3.2.1 “Xerographics 2” on page 10-24
Troubleshooting Procedure Table
Steps Actions and Questions Yes No
1
Use service diagnostics to test the
Temperature/Humidity Sensor.
Does the sensor function correctly?
Go to Step 2. Replace the Temp/
Hum Sensor,
page 8-24.
2
Does the error recur after replacing the
Temperature/Humidity Sensor?
Go to Step 3. Complete
3
Troubleshoot using the wiring diagrams
“Xerographics 1” on page 10-23 and
“Xerographics 2” on page 10-24
Is the problem resolved?
Complete Replace the
Engine Control
Baord,
page 8-107.
Troubleshooting Procedure Table
Steps Actions and Questions Yes No
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