Ford/Mercury Gear Driven Camshaft Position (CMP) Installation

Incorrectly installed gear driven camshaft position
(CMP) sensor synchronizer assemblies may be hard
to diagnose. Vehicle may exhibit poor fuel economy,
driveability Diagnostic Trouble Codes (DTCs)
P1336, P1309, P0340 with MIL light on. Loss of
power, surge, hesitation and runs rough on
acceleration may also be present.
ACTION
New diagnostics have been developed for WDS to
diagnose incorrectly installed gear driven camshaft
position (CMP) synchronizer assemblies. Refer to
the following Service Procedure to diagnose a
possible mis-installed synchronizer assembly and
proper installation procedure.
SERVICE INFORMATION
Items Covered In This Article:
• “Hall” vs. “VRS” sensor function
• Vehicle history scrutiny for past service of the
synchronizer assembly
• WDS - Power balance test
• WDS - CMP and CKP wave signal comparison
• Wave Comparison chart - CMP vs. CKP
• Correct (CMP) synchronizer installation tool
application & installation procedure
• “Top Dead Center” (TDC) alignment
• Synchronizer installation tool application chart

Source