Testing and Inspection - Power Steering Pressure Switch (1985 Fiero L4-151 25L)
Fig. 038 - Chart C-1E Power Steering Pressure Signal
1.
Checks for ECM signal voltage on CKT 495, and confirms that ground CKT 450 is OK.
2.
Maximum resistance, or infinity, indicates an open switch.
3.
Less than 1 ohm indicates that the switch is closed when the power steering pressure is high. Switch is OK.
