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- Permanent Fault Codes may only be erased in the control mod‐ ule after they are corrected as long as the last diagnostic result was a PASS and the MIL is no longer activated by this fault. The Permanent Fault Codes should be erased from Mode 0A at the same time the MIL switches off when the ignition is switched off/ on. memory or disconnecting the power supply. Storage in NVRAM is required. DTC memory under the following conditions: - As long as no FAIL diagnostic result was detected for a Permanent Fault Code - and at least one PASS diagnostic result was detected - and the Min‐ imum Trip Conditions for a General Denominator (without con‐ sidering high/ambient temperature) were met in this phase in any DCY after erasing the DTC memory. conditions met” to all other OBD control modules via CAN: CAN message OBD_01, Byte 8, Bit 4: OBD_Minimum_Trip result is FAIL after clearing the DTC memory. A Pending Fault Code should be stored and the DTC memory line should be over‐ written with new Freeze Frame data. (Exception: If the Pending Fault Code is corrected without a Confirmed Fault Code being detected, the Permanent Fault Code may also be erased under the conditions described below.) modules after Update Programming. At this time, all readiness bits (Mode 01 PID $01) must be reset to “not complete” [ (g)(4.4.6) (D) ]. Permanent Fault Codes should not be erased in OBD con‐ trol modules with Comprehensive Components (CCM) as a single readiness bit if the identical program/data status is being pro‐ grammed. If a different program/data status is being program‐ med, Permanent Fault Codes should be erased after Update Programming. tester is NOT affected by implementation of the Permanent Fault Codes. Note After MIL off during the 40 warm-up cycle self-healing process, the fault may not be reported as Permanent Fault Code anymore Procedure – Permanent Fault Codes: can only be erased at the end of a driving cycle (during ECM keep alive time) if all the following conditions are fulfilled: ♦ ERASE: Permanent Fault Codes after code clear, the vehicle needs to be driven! ♦ NO FAIL: DTC cleared ning ♦ DRIVE: 300 s (cumulative) vehicle speed > 25 mph (40 km/h) GTI 2014 ➤ Generic Scan Tool - Edition 04.2015 3. Diagnosis and Testing 45 |