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HSA (HILL START AID) 5A5-31 DTC 91 Solenoid Valve Drive Signal and Solenoid Valve Monitor Conditions Are Erratic Step Action Value YES NO 1 Is the connector of the HSA valve normal? — 2 Disconnect the connector of HSA valve. Mea- 55.8 Ω±10% 3 Repair the connector. Is the repair completed? — 4 Measure the resistances between the HSA Less than 5 Ω 5 Replace the HSA valve. Is the repair completed? — 6 Is the battery voltage applied between the 20 V or more 7 Repair the open circuit of the circuit that has Ω or more. Is the repair completed? — 8 Replace the HSA control unit. Is the repair completed? — 9 Repair the open circuit of the circuit that has Is the repair completed? — 10 After HSA repair, make sure no trouble is Is this step completed? — — |