Checking wiring and connectors
Check the signal cable between control module terminal #A40 and terminal 1 on the connector for the engine coolant temperature (ECT) sensor. Check for an intermittent open-circuit. Check for an intermittent short-circuit to supply voltage.
HINT: With the ignition on and the engine coolant temperature (ECT) sensor connector disconnected, the voltage between terminal 1 and the ground terminal must be approximately 5 V.
Check the ground lead between control module terminal #A61 and terminal 2 on the connector for the engine coolant temperature (ECT) sensor. Check for an intermittent open-circuit.
Other information
- To connect the breakout box, see connecting the breakout box
- To access the control module, see engine control module (ECM), replacing
- To access the engine coolant temperature (ECT) sensor, see engine coolant temperature (ECT) sensor, replacing
- For information about signals, see Signal specification
- See Checking wiring and terminals .
- Continue
Refer to Information