Circuit Description
No engine RPM signal.
Conditions for Running the DTC
| • | Automatic transmission output speed is greater than 2,000 RPM. |
| • | Vehicle speed is in the range of 24-91 km/h (15-57 mph). |
Conditions for Setting the DTC
No engine speed signal
Action Taken When the DTC Sets
The transmission control module (TCM) illuminates the A/T warning lamp when the diagnostic runs and fails.
Conditions for Clearing the MIL/DTC
The TCM turns OFF the A/T warning lamp when the diagnostic runs and does not fail.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Is the voltage greater than the specified value? | 10 V | Go to Step 3 | Go to Step 5 |
3 |
Important: Engine running at idle speed at operating temperature.
Is the RPM within the specified value? | 630-930 RPM | Go to Step 8 | Go to Step 4 |
4 | Inspect circuit for a short to voltage between the TCM connector terminal 39 and engine control module (ECM) connector terminal 48. Did you find and correct the condition? | -- | Go to Step 9 | Go to Step 5 |
5 | Test for an open circuit between TCM connector terminal 39 and ECM connector terminal 48. Did you find and correct the condition? | -- | Go to Step 9 | Go to Step 6 |
6 | Test circuit for a short to ground between TCM connector terminal 39 and ECM connector terminal 48. Did you find and correct the condition? | -- | Go to Step 9 | Go to Step 7 |
7 | Replace the ECM. Refer to Engine Control Module Replacement . Did you complete the replacement? | -- | Go to Step 9 | -- |
8 | Replace the TCM. Refer to Transmission Control Module Replacement . Did you complete the replacement? | -- | Go to Step 9 | -- |
9 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
