Mirage L4-1597cc 1.6L DOHC Turbo (1989)
Main Relay (Computer/Fuel System): Testing and Inspection
Control Relay
System Schematic
Failure of the control relay could interrupt power supply to the fuel pump, injectors and ECU, resulting in start failure. Also see Fuel Pump and/or
Power Circuits in TESTING PROCEDURES
Confirm circuit tester polarity before checking continuity.
Test control relay by checking continuity between the following terminals of the control relay coil.
Fig. 1 Relay Test
Use caution when connecting jumper wires to the relay. If they are incorrectly connected the relay will be damaged.
1. Connect jumper wires between relay terminals 10 and 8 and a 12v power source. Terminal 10 is positive (+) and 8 is negative (-).
2. Measure the voltage at terminals 4 and 5 with the power connected and disconnected at terminal 8.
POWER TO RELAY ..................................................................................................................................... VOLTAGE READING TERMINALS 4 & 5
On ................................................................................................................................................................................................................. System Voltage
Off .............................................................................................................................................................................................................................. 0 Volts
