The malfunction indicator lamp (MIL) request circuit signals the engine control module (ECM) that the transmission control module (TCM) is requesting MIL illumination.
This diagnostic procedure supports the following DTC:
DTC P0700 Transmission Control Module (TCM) Requested MIL Illumination
• | The ignition is ON for more than 7 seconds. |
• | DTC P0700 runs continuously. |
The TCM is requesting MIL illumination or the MIL request circuit is shorted to ground.
• | The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails. |
• | The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records. |
• | The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. |
• | A current DTC, Last Test Failed, clears when the diagnostic runs and passes. |
• | A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. |
• | Clear the MIL and the DTC with a scan tool. |
Step | Action | Values | Yes | No |
---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | -- |