Hookup
19
Active Fuel Injector Tester User Guide
Direct Injector Connection
This connection directly controls the injectors from the MCU. The fuel pump is controlled
through the DLC. Use this hookup when testing vehicles that do not support diagnostic link
injector control. You must the use the injector harness (or J-Cable Adapter and existing J-Cables,
depending on the vehicle) with this connection. However,
do not
connect the injector harness
until instructed to by AFIT.
Procedure:
Note: To correctly match test results to the injector, use the injector locater when using this hookup.
1. Connect the one serial cable to the MCU and the DLC adapter.
2. Connect the DLC adapter to the Serial to OBDII cable.
3. Connect the Serial to OBDII cable to the vehicle’s OBDII connector.
4. Connect the Fuel Schrader Connector to the vehicle’s fuel rail at the fuel test port.
5. Connect the injector harness (or J-Cable Adapter and J-Cable) to the MCU and the vehicle’s
injectors. IMPORTANT! Do not perform this step until instructed to (AFIT will prompt for the
correct injector harness).
6. Insert the drain hose into an approved fuel storage container.
POWER
Fuel Management Unit
ENTER
CANCEL
DOWN
ON / OFF
UP
To approved fuel
storage container
To vehicle’s
OBDII Connector (DLC)
Vehicle’s fuel rail
Fuel
test port
IMPORTANT
Do not connect the injector harness to injectors until instructed by AFIT.
IMPORTANT
Hang the FMU vertically from vehicle’s hood
To vehicle’s battery
Serial
Cable
DLC adapter
Interconnect
Cable
FMU
MCU
When needed, use with existing
SPX Kent-Moore J-Cables to
connect the MCU to the vehicle’s
injectors.
CH-47976-60
Serial to OBDII
Cable
