Triple CAN exhaust temperature sensor, timeout
1. Check the supply voltage pins to the exhaust temperature sensor unit for electrical failures. 2. Check the CAN cable harness between the EEC and the exhaust temperature sensor unit for electrical failures. 3. If no electrical failures in the harness are found, change the exhaust temperature sensor. For a detailed harness and pin description see the electrical component, under the check tab, in the diagnostic tool. For a general description about different methods for electrical failure checks see the work shop manual subgroup 16-70.
What you'll see
No driver-visible symptom recorded.
System reaction
No reaction.
Diagnostic depth
Lost communication with the exhaust temperature sensor unit.
1. Electrical error in the exhaust temperature sensor unit voltage supply. 2. CAN communication error between the EEC and the exhaust temperature sensor unit. 3. Internal electrical failure in the exhaust temperature sensor unit.