Tachometer Malfunction [10/2023 - ]: Procedure
- READ VALUE USING TECHSTREAM (ENGINE SPEED)
- Using the Techstream, read the Data List.
Refer to DATA LIST / ACTIVE TEST [10/2023 - ]
Body Electrical > Combination Meter > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note Engine RPM Engine speed Min.: 0 rpm, Max.: 12700 rpm or Unset Almost the same as actual tachometer - Body Electrical > Combination Meter > Data List
Tester Display Engine RPM HINT:
- When the Data List values of the ECUs match, an internal malfunction of the ECM is suspected.
- When the Data List values of the ECUs do not match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected.
OK
The Data List values of the ECUs do not match.
Result
Proceed to OK NG
Result:
OK
REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL [10/2023 - ]
Result:
NG
See step 2
- Using the Techstream, read the Data List.
- CHECK FOR DTC (SFI SYSTEM)
- Check if SFI system DTCs are output.
Refer to DTC CHECK / CLEAR [10/2023 - ]
Powertrain > Engine > Trouble Codes
Result
Proceed to OK NG
Result:
NG
GO TO SFI SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2023 - ]
Result:
OK
See step 3
- Check if SFI system DTCs are output.
- READ VALUE USING GTS (ENGINE RPM, ENGINE SPEED)
- Using the GTS, read the Data List.
Refer to DATA LIST / ACTIVE TEST [10/2023 - ]
Body Electrical > Combination Meter > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note Engine Rpm Engine speed Min.: 0 rpm, Max.: 12750 rpm Actual engine speed - Body Electrical > Combination Meter > Data List
Tester Display Engine RPM Powertrain > Engine > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note Engine Speed Engine speed Min.: 0 rpm, Max.: 16383 rpm Actual engine speed - Powertrain > Engine > Data List
Tester Display Engine Speed HINT:
- When the Data List values of the ECUs match, an internal malfunction of the ECM is suspected.
- When the Data List values of the ECUs do not match, a signal output error of the ECM or an internal malfunction of the combination meter assembly is suspected.
OK
The Data List values of the ECUs do not match.
Result
Proceed to OK NG
Result:
OK
REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL [10/2023 - ]
Result:
NG
REPLACE ECM. Refer to REMOVAL [10/2023 - ]
- Using the GTS, read the Data List.