Conditions for Clearing the MIL/DTC
WARNING: This page is about a different variant/trim than selected.
- The ECM clears the DTC from ECM history if the vehicle completes 40 warm-up cycles without a non emission diagnostic fault occurring.
- The ECM cancels the default action when the ignition is OFF long enough in order to power down the ECM.
- A scan tool can clear the DTC.
DTC P0850
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check - Engine Controls? | - | Go to Step 2 | Go to Diagnostic System Check - Engine Controls in Engine Controls - 2.6L and 3.2L or Diagnostic System Check - Engine Controls in Engine Controls - 3.6L (LY7) |
| 2 |
IMPORTANT:
|
- | Go to Diagnostic Trouble Code (DTC) List/Type | Go to Step 3 |
| 3 |
|
- | Go to Step 4 | Go to Step 8 |
| 4 | Shift the transmission from Park to Drive. Does the PNP Switch display "In Gear"? |
- | Go to Intermittent Conditions in Engine Controls - 2.6L and 3.2L or Intermittent Conditions in Engine Controls - 3.6L (LY7) | Go to Step 5 |
| 5 | Disconnect the automatic transmission inline 20-way connector. Does the PNP Switch display Park/Neutral? |
- | Go to Step 6 | Go to Step 7 |
| 6 | Test the PNP Switch signal circuit for a short to ground between the automatic transmission inline 20-way connector and manual shift shaft position switch. Refer to Testing for Short to Ground
in Wiring Systems. Did you find the condition? |
- | Go to Step 11 | Go to Step 12 |
| 7 | Test the PNP Switch signal circuit for a short to ground between the automatic transmission inline 20-way connector and the ECM. Refer to Testing for Short to Ground
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 13 |
| 8 |
|
- | Go to Step 10 | Go to Step 9 |
| 9 | Test the PNP Switch signal circuit for an open between the automatic transmission inline 20-way connector and the ECM. Refer to Testing for Continuity
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 13 |
| 10 | Test the PNP Switch signal circuit for an open between the automatic transmission inline 20-way connector and the manual shift shaft position switch. Refer to Testing for Continuity
in Wiring Systems. Did you find the condition? |
- | Go to Step 11 | Go to Step 12 |
| 11 | Replace the transmission internal wiring harness. Refer to Transmission Internal Electrical Harness Replacement
. Is the action complete? |
- | Go to Step 14 | - |
| 12 | Replace the manual shaft shift position switch. Refer to Manual Shaft Shift Position Switch Replacement
. Is the action complete? |
- | Go to Step 14 | - |
| 13 | Replace the ECM. Refer to Engine Control Module (ECM) Replacement
in Engine Controls - 2.6L and 3.2L or Engine Control Module (ECM) Replacement
in Engine Controls - 3.6L. Is the action complete? |
- | Go to Step 14 | - |
| 14 | Perform the following procedure to verify the repair:
Has the test run and passed? |
- | Go to Step 15 | Go to Step 2 |
| 15 | With the scan tool, observe the stored information, capture info and DTC info. Does the scan tool display any DTCs that you have not diagnosed? |
- | Go to Diagnostic Trouble Code (DTC) List in Engine Controls - 2.6L and 3.2L or Diagnostic Trouble Code (DTC) List in Engine Controls - 3.6L (LY7) | System OK |