Waiver Request Support Document

74 Attachment 2

2013 Amendments to HD OBD and OBD II Requirements That Relax Existing Requirements 187

Amendments to HD OBD Requirements in Title 13, CCR section 1971.1

A. Section (c): Definitions. 1. “Alternate phase-in” /[1968.2(c)] 1. “Diagnostic or emission critical” 2. “Warm-up cycle” B. General Requirements 1. Section (d)(4.3.2)(E)/ [1968.2(d)(4.3.2)(F)]: Denominator Specifications 2. Section (d)(4.3.2)(F): Denominator Specifications 3. Section (d)(4.3.2)(J): Denominator Specifications for Hybrid Vehicles 4. Section (d)(7.6): 2013 Model Year Hybrid Vehicles C. Monitoring Requirements for Diesel/Compression-Ignition Engines. 1. Section (e)(3.2.6)/ [1968.2(f)(6.2.6)]: Exhaust Gas Recirculation (EGR) System Monitoring - Malfunction Criteria for EGR Catalyst

Performance 2. Section (e)(5.2.3)(B)/ [1968.2(f)(1.2.3)(B)]: NMHC Converting Catalyst Monitoring – Delay Implementation Start Date to 2015 3. NOx Converting Catalyst Monitoring a. Sections (e)(6.2.1) and (e)(6.2.2)/ [1968.2(f)(2.2.2)(A)]: Conversion Efficiency and Reductant Delivery Performance Monitoring b. Section (e)(6.3)/ [1968.2(f)(2.3.1]: Monitoring Conditions for Reductant Delivery Performance Monitoring 4. PM Filter Monitoring a. Section (e)(8.2.1): Filtering Performance Monitoring – Increasing PM Threshold/ [1968.2(f)(9.2.1)] b. Section (e)(8.2.4)/ [1968.2(f)(9.2.4)(A)]: NMHC Conversion Monitoring 5. Exhaust Gas Sensor Monitoring a. Section (e)(9.2.2)(A)/ [1968.2(f)(5.2.2)(A)]: NOx and PM sensors

Malfunction Criteria b. Section (e)(9.3.1) NOx and PM sensors Monitoring Conditions D. Monitoring Requirements for All Engines 1. Comprehensive Component Monitoring a. Sections (g)(3.1.4) and (g)(3.1.5): Exceptions for Hybrid Vehicles b. Section (g)(3.2.2)(B)(ii)d.: Diesel Idle Control System Monitoring c. Section (g)(3.2.2)(F)/ [1968.2(f)(15.2.2)(F)(ii)]: Malfunction Criteria for Certain Output Components d. Section (g)(5.7): Monitor Disablement at Low Temperatures

187 Amendments to provisions of the OBD II regulation are indicated by providing the corresponding provision in section 1968.2 in brackets [ ].Waiver Request Support Document

75 e. Section (g)(5.8)/ [1968.2(f)(17.2.3)]: Alternate Phase-in Schedules E. Standardization Requirements 1. Sections (h)(4.4.1)(F)(iv) and (4.4.2)(F)(iv): Erasing of Permanent Fault

Codes 2. Section (h)(4.8.3): Reprogrammable Vehicle Identification Number (VIN) and Engine Serial Numbers (ESN) F. Monitoring System Demonstration Requirements for Certification - Section (i)(3.2.7): Exhaust Gas Sensors

G. Deficiencies 1. Section (k)(4): Carry-over Deficiencies 2. Section (k)(6.1): Retroactive Deficiencies 2. Section (k)(7): Deficiencies for PM Filter and PM Sensor Monitors 3. Section (k)(8): Deficiencies for Hybrid Vehicles H. Production Engine/Vehicle Evaluation Testing 1. Section (l)(2.1): Verification of Monitoring Requirements 2. Section (l)(2.3.6): Exemption from Testing of Specific Diagnostics

Amendments to OBD II Requirements in Title 13, CCR section 1968.2

A. General Requirements 1. 1968.2(d)(3.2.1)(D)(vi): Monitoring Conditions – Diesel Performance Monitors and Missing Substrate Monitors B. Monitoring Requirements for Diesel/Compression-Ignition Engines 1. 1968.2(f)(17.1): Exceptions to Monitoring RequirementsWaiver Request Support Document

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