Display Group 018

VAG 1551 Display, Measuring Value Block Display Group 018:

Key to VAG 1551 Display, Measuring Value Block 18

NOTE on display field 1:
^ The Engine Control Module (ECM) internal calculation value for the specified value duty cycle is displayed without current and voltage corrections.

NOTE on display field 2:
^ The current actually drawn by the Idle Air Control (IAC) valve -N71- is displayed.

NOTES on display field 3:
^ Positive values indicate increase in the duty cycle to reach the specified current.
^ If a longer time +60% is displayed, this indicates terminal resistance and/or IAC valve -N71- is too hot.
^ Negative values indicate reduction in actual duty cycle to achieve the specified current.
^ If longer time -40% is indicated, this indicates a winding short circuit in IAC valve -N71-.