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| {|
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| |-
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| |'''Information saved in'''
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| |DME
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| |-
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| |'''Fault code'''
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| |27B0 - P0491
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| |-
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| |'''Fault text'''
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| |Secondary air system flow rate, bank 1
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| |-
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| |'''Fault description'''
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| |Secondary Air Injection System Insufficient Flow (Bank 1)
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| |-
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| |'''Condition for fault identification'''
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| |Test condition: sls_obdh_mdf_max_intg_norm (after roughly 30s)<K_SLS_OBDH_MDF_MIN_DEF and
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| |-
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| |'''.'''
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| |sls_obdh_lam_asv_intg_norm < k_SLS_OBDH_MDF_2_MAG or
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| |-
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| |'''.'''
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| |sls_obdh_lam_asv_intg_norm < k_SLS_OBDH_ASV_LI_OPE and K_SLS_OBDH_MDF_MIN_DEF>K_SLS_OBDH_MDF_MAX_DEF
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| |-
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| |'''.'''
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| |Terminal condition: Engine running
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| |-
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| |'''.'''
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| |Voltage condition: Battery voltage > 10.8 V (k_sls_obd_ub_min)
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| |-
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| |'''Condition for fault memory entry'''
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| |30000 ms
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| |-
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| |'''Action in service'''
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| |1. Disconnect secondary air line
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| |-
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| |'''.'''
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| |2. Carry out test routine
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| |-
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| |'''.'''
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| |3. If flow is too high, replace the ASV
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| |-
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| |'''.'''
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| |4. Otherwise check Line 1 for obstructions and replace as indicated
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| |-
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| |'''Fault effect and breakdown warning'''
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| |MIL is on after 2x engine cold start
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| |-
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| |'''Driver information'''
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| |Warning light: MIL
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| |-
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| |'''Service instruction'''
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| |None
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| |}
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