P0016 ENGINE SPEED SIGNAL MISMATCH (DIESEL)

When Monitored and Set Condition

When Monitored: While Engine is running.
Set Condition: When the engine speed detected by the Engine Position Sensor (cam) and the Engine Speed
Sensor (crank) differ by a specified RPM amount.

POSSIBLE CAUSES

• DAMAGE TO THE ESS OR EPS
• MECHANICAL MISALIGNMENT OF THE ESS OR EPS
• MECHANICAL MISALIGNMENT OF THE CAMSHAFT AND CRANKSHAFT GEARS
• INTERMITTENT CONDITION

DIAGNOSTIC PROCEDURE

NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures.

1. Visually inspect the condition of the tone wheel, ESS, and EPS for damage.  Are any of the components damaged?
   Yes --> Repair or replace any damaged component. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
   No --> Go To 2
2. Verify the speed indicator ring is properly positioned relative to the locating pin in the front face of the crankshaft. Is the speed indicator ring properly installed?
   Yes --> Go To 3
   No --> Repair the speed ring indicator ring installation. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
3. Check the mechanical alignment of the camshaft gear to the crankshaft gear. Refer to service information for assistance. Are the gear teeth in proper alignment?
   Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
   No --> Repair the gear alignment. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).