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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 231 (Engine Controls - 3.9L - DTC P0442 To P2A01) >> DTC P0685, P0689 or P0690 >> Typical Scan Tool Data

Typical Scan Tool Data

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
EC Ignition Relay Feedback Signal

Circuit Normal Range Short to Ground Open Short to Voltage
Operating Conditions:  Ignition ON, with the engine OFF.
Battery Supply Voltage - Coil - 0.0 V 0.0 V -
Battery Supply Voltage - Armature - 0.0 V 0.0 V -
EC Ignition Relay Control - 0.0 V 0.0 V -
EC Ignition Relay Feedback 11.9-12.9 V 0.0 V 0.0 V More than 2 V1
1 DTC P0690 will set if the ECM detects voltage when the ignition is in the OFF position.