Conditions for Clearing the MIL/DTC

The control module turns OFF the 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.

DTC P1682

Step	Action	Values	Yes	No
Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Control Module (ECM) Connector End Views or Engine Controls Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	-	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Are DTCs P0615, P0685, P0689, or P0690 also set?	-	Go to Diagnostic Trouble Code (DTC) List - Vehicle	Go to Step 3
3	Observe the Freeze Frame/Failure Records for this DTC. Turn OFF the ignition for 30 seconds. Start the engine. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 4	Go to Testing for Intermittent Conditions and Poor Connections
4	Turn ON the ignition, with the engine OFF. Probe both test points of the ECM 2 fuse at the underhood fuse block with a test lamp that is connected to a good ground. Refer to Troubleshooting with a Test Lamp . Does the test lamp illuminate on both test points of the ECM fuse?	-	Go to Step 6	Go to Step 5
5	Does the test lamp illuminate on one test point of the ECM 2 fuse?	-	Go to Step 7	Go to Power Mode Mismatch
6	Turn OFF the ignition. Disconnect the negative battery cable at the battery. Refer to Battery Negative Cable Disconnect/Connect Procedure . Disconnect the underhood fuse block electrical connector that contains the ignition 1 voltage circuit from the ECM 2 fuse in the underhood fuse block. Disconnect the engine control module (ECM) electrical connector that contains the ignition 1 voltage circuit from the ECM 2 fuse in the underhood fuse block. Measure the resistance of the ignition 1 circuit from the ECM electrical connector to the underhood fuse block electrical connector with a DMM. Refer to Troubleshooting with a Digital Multimeter . Does the resistance measure greater than the specified value?	2 ohm	Go to Step 9	Go to Step 8
7	Turn OFF the ignition. Disconnect the negative battery cable at the battery. Refer to Battery Negative Cable Disconnect/Connect Procedure . Disconnect the underhood fuse block electrical connector that contains the ignition 1 voltage circuit from the ECM 2 fuse in the underhood fuse block. Disconnect the ECM electrical connector that contains the ignition 1 voltage circuit from the ECM 2 fuse in the underhood fuse block. Probe the ignition 1 voltage circuit at the ECM electrical connector with a test lamp that is connected to battery positive voltage. Does the test lamp illuminate?	-	Go to Step 10	Go to Step 8
8	Test for shorted terminals and poor connections at the ECM wire harness electrical connector. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 12	Go to Step 11
9	Repair the high resistance or an open in the ignition 1 voltage circuit between the underhood fuse block and the ECM. Refer to Wiring Repairs . Did you complete the repair?	-	Go to Step 12	-
10	Repair the short to ground in the ignition 1 voltage circuit between the underhood fuse block and the ECM. Refer to Wiring Repairs . Did you complete the repair?	-	Go to Step 12	-
11	Replace the ECM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement?	-	Go to Step 12	-
12	Clear the DTCs with a scan tool. Turn OFF the ignition for 30 seconds. Start the engine. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 2	Go to Step 13
13	Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed?	-	Go to Diagnostic Trouble Code (DTC) List - Vehicle	System OK