Signal Too Low

Signal too low

Checking the status




- Ignition on.
Check whether the fault is permanent or intermittent by reading off the signal from the engine coolant temperature (ECT) sensor.
Check that the signal is within its permitted range.
The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.









Continue - Checking the component and wiring

-------------------------------------------------

Checking the component and wiring
Check the cable between engine control module (ECM) terminal #A67 (#B7) and engine coolant temperature (ECT) sensor terminal #1. Check for a short-circuit to ground.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Engine Control Module (ECM)
- Signal specification Signal Specification, Engine Control Module (ECM)
- Engine coolant temperature sensor (ECT) Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals













Continue - Verification

-------------------------------------------------

Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Read off the signal from the engine coolant temperature (ECT) sensor.
Check that the signal is within its permitted range.









Is the signal within its permitted range?

Yes - VERIFIED

No - VERIFICATION FAILED

------------------------

VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

-------------------------------------------------

Fault-tracing information

FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the status

-------------------------------------------------