Orlando

DTC P066A - LNP or LNQ

This DTC applies to internal microprocessor integrity conditions within the glow plug control module.

The ECM detects a glow plug control module malfunction.

DTC P066A 00 is a Type A DTC.

DTC P066A 00 is a Type A DTC.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF, disconnect the harness connector at the K34 Glow Plug Control Module.
2. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Ignition OFF, disconnect the harness connectors at the K34 Glow Plug Control Module.
2. Test for less than 5 Ω of resistance between the ground circuit terminal 3 X1 and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Test for greater than 0.3 Ω of resistance between each of the glow plug circuit terminals and ground.

•	E12A Glow Plug 1 circuit terminal 3 X2

•	E12B Glow Plug 2 circuit terminal 1 X2

•	E12C Glow Plug 3 circuit terminal 4 X2

•	E12D Glow Plug 4 circuit terminal 6 X2

⇒	If less than the specified range, test the glow plug circuit for a short to ground. If the circuit tests normal, replace the appropriate Glow Plug.

4. Ignition ON, verify a test lamp illuminates between the K34 Glow Plug Control Module ignition voltage circuit terminal 4 X1 and ground.

⇒	If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance.

5. If all circuits test normal, replace the K34 Glow Plug Control Module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.