Level 3 diagnostics Annex 2 Minimum monitoring requirements

Level 3 diagnostics Annex 2. Minimum monitoring requirements 2. 3. 1 & 2. 3. 2. &2. 3. 3. Level 1: sensor/actuator of which at least two circuit continuity symptoms can be detected and reported (i. e. short circuit to ground, short circuit to power and open circuit). Level 2: sensor/actuator of which at least one circuit continuity symptom can be detected and reported (i. e. short circuit to ground, short circuit to power and open circuit). Level 3: sensor/actuator of which at least one symptom can be detected, but not reported separately. CLEPA expressed comment prior to CG telco in Aug that levels should be only applicable for circuit continuity diagnostics Appl. IMMA (Original text) 3 Applicable Basic monitoring requirements Device not operational /Device not present Appl. Signal stuck 3 Performance/Plausibility Open circuit CLEPA proposal Circuit rationality Out of Range Circuit low Circuit continuity Circuit high Device circuits Level No Applicable Since prescription of Level 3 does not specifically states circuit continuity symptom, Level 3 is applicable to all symptoms including Circuit continuity, Circuit rationality, and Basic monitoring requirements.

Level 3 diagnostics 22 Vehicle speed sensor 3 CLEPA proposal 3 IMMA (Original text) 3 Appl. Basic monitoring requirements Device not operational /Device not present Signal stuck Performance/Plausibility Circuit rationality Out of Range Circuit low Open circuit Circuit continuity Circuit high Device circuits Level No YES Applicable Difference between original text and CLEPA proposal CLEPA Proposal (if level 3 becomes only applicable to the circuit continuity) Circuit rationality and Basic monitoring requirement are mandatory. IMMA Proposal (as in original text) Either one of Circuit rationality or Basic monitoring requirement is mandatory. IMMA disagree to CLEPA proposal, since this modification changes the content of requirement and may require significant change to the vehicle specification.