P0216

DTC P0216 Injection Timing Control System






Circuit Description

Timing of the combustion event is accomplished by delivering a pulse of fuel into the combustion chamber at a desired degree of cylinder travel. This desired degree (defines the current p0sition of the cylinder in relationship of Top Dead Center). This test compares desired timing to measured timing when certain conditions have been met. To retard injection timing the PCM extends the stepper motor. To advance injection timing the PCM retracts the stepper motor. This is a type B DTC.

Conditions for Setting the DTC

^ Engine speed has not changed more than 56 rpm for 20.8 seconds.
^ A 5 degree difference between Act. Inj Time and Des. Inj. Time.

Action Taken When the DTC Sets

Possible combustion noise.

Conditions for Clearing the MIL/DTC

^ The PCM will turn the MIL off after three consecutive trips without a fault condition.
^ A History DTC will clear when forty consecutive warm-up cycles that the diagnostic does not fail (coolant temperature has risen 5°c (40°F) from start up coolant temperature and engine coolant temperature exceeds 71°C (160°F) that same ignition cycle).
^ Use of a Scan Tool.

Diagnostic Aids

A hard start and possible poor performance condition might exist. Act. Inj. Time will freeze at the point of the fault. DTC P0216 will set if injection timing is not set correctly. Refer to Checking and Adjusting Injection Timing.

Test Description

Number(s) refer to the number(s) on the diagnostic table.

2. This step determines is a hard failure or an intermittent.

3. This step checks for an open or short in the injection timing coil circuit ~

4. This step checks for an open or short in the injection timing coil circuit 2.

5. The important thing in this step is that the PCM is sending a varying voltage (voltage may vary between 1 and 12 (usually you will see voltage vary between 5 and 6 when engine is idling)), this will indicate that the PCM is OK and that there is a problem with the injection timing stepper motor. If there is a steady voltage present on any circuit, this will indicate a problem with the PCM or a circuit shorted to voltage.