Display Group 014

Display Group 014

^ The display groups 011 through 019 apply to driveability troubleshooting (idle problems and/or loss of power) and special component malfunctions.

Display Group 014 Overview:

Notes on display fields 2, 3, and 4 of display group 014:

Knock regulation is active at an engine load greater than 40%. If the engine load value exceeds 40%, the current ignition timing retarding values are displayed. When the engine load value drops below 40%, the last ignition timing retarding value used is displayed continuously

When there is audible knocking without recognizable ignition timing retarding, the engine speed should be increased over 3500 RPM for 5 seconds to initiate the knock sensor malfunction recognition (diagnostic).

If the ignition timing retarding value of one cylinder clearly deviates from the other cylinders, the following malfunctions are possible:

^ Loose auxiliary assemblies

^ Corrosion on the harness connector

^ Engine damage (e.g. oil consumption with damaged pistons/rings).

If large ignition timing retarding values are displayed for an entire bank, the following malfunctions are possible:

^ Corrosion in harness connection see display groups 015 and/or 016

^ Improper knock sensor torque: torque to 15 ft lb. (20 Nm)

^ Open circuit in wiring see display group 015 and/or 016

^ Knock sensor faulty see display group 015 and/or 016

^ Loose auxiliary assemblies

If large ignition timing retarding values are displayed for all cylinders (banks land 2), fuel octane is too low (less than 91 RON).