4 Runner 4WD V6-180.5 2959cc 3.0L SOHC (3VZ-E) (1989)
Cold Start Injector: Testing and Inspection
1. Disconnect the Cold Start Injector connector.
2. Using an Ohmmeter, measure the resistance across the terminals.
Measuring Cold Start Injector Resistance
Resistance:
2 - 4 Ohms
3. If not as specified, replace the Cold Start Injector.
4. To test injector operation, remove Cold Start Injector from intake plenum. Refer to COMPONENT REPLACEMENT AND REPAIR for
proper procedure.
5. Using special service tools (SST), connect Cold Start Injector to the fuel delivery pipe with new gaskets and union bolt.
Testing Cold Start Injector With Special Service Tools (SST)
6. Connect SST jumper wire connector and place a container under the Cold Start Injector to catch the expelled fuel.
7. Reconnect the negative battery cable, if removed and turn the ignition switch ON.
8. Using a service wire, short terminals +B and FP of the engine check connector. This will cause the fuel pump to operate and pressurize the
system.
Engine Check Connector