FixVault

Control Circuit Inspection

Check Item Specifications Prerequisite Condition Terminal (+) Terminal (-)
Control circuit for open - Resistance Approx. below 1 Ω
  1. Ignition SW "OFF"
  2. Disconnect ECM and Injector connectors
Injector highside terminal of injector harness Injector highside terminal of ECM harness
Control circuit for open - Resistance Approx. below 1 Ω
  1. Ignition SW "OFF"
  2. Disconnect ECM and Injector connectors
Injector highside terminal of injector harness Injector lowside terminal of ECM harness
Control circuit for short to ground - Resistance Infinite (∞)
  1. Ignition SW "OFF"
  2. Disconnect ECM and Injector connectors
Injector highside terminal of injector harness Chassis ground
Control circuit for short to ground - Resistance Infinite (∞)
  1. Ignition SW "OFF"
  2. Disconnect ECM and Injector connectors
Injector lowside terminal of injector harness Chassis ground
Control circuit for short to battery - Voltage Approx. 0V
  1. Disconnect Injector connectors
  2. Ignition SW "ON"
Injector highside terminal of injector harness Chassis ground
Control circuit for short to battery - Voltage Approx. 0V
  1. Disconnect Injector connectors
  2. Ignition SW "ON"
Injector lowside terminal of injector harness Chassis ground
  1. Is the measured resistance within specification?

    YES 

    NO