ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY) - 5E-6190-823225--1 1096
Engine Cranks but Will Not Run (Continued)
Chart A-3: (4 of 4)
2
• RECONNECT INJECTOR(S)
• IGNITION “OFF.”
• DISCONNECT ECM
• IGNITION “ON.”
• PROBE TERMINALS “J2-21” AND “J2-5”
WITH A TEST LIGHT TO GROUND.
FROM
A-3
(2 OF 4)
REFER TO FACING PAGE.
DUE TO INJECTORS WIRED IN
PARALLEL, THERE SHOULD BE A
LIGHT ON BOTH TERMINALS.
IF NOT, THE PROBLEM IS AN OPEN
IN THE HARNESS TO THE TESTED
INJECTOR.
• IGNITION “ON.”
• PROBE INJECTOR HARNESS
TERMINALS WITH A TEST LIGHT TO
GROUND.
• LIGHT SHOULD BE “ON” AT BOTH
TERMINALS.
• CHECK INJECTOR DRIVER CIRCUIT WITH TEST
LIGHT FOR SHORT TO GROUND.
• IF CIRCUIT IS NOT SHORTED, CHECK RESISTANCE
ACROSS EACH INJECTOR IN THE CIRCUIT.
• RESISTANCE SHOULD BE 12 OHMS + .4.
NO LIGHT
STEADY LIGHT
OK NOT OK
FAULTY ECM
LIGHT “ON” BOTH LIGHT “ON” ONE LIGHT “OFF” BOTH
REPAIR OPEN IN INJECTOR
FEED CIRCUIT.
LIGHT “ON” LIGHT “OFF”
OPEN CKT 467 OR 468
1
3
REPAIR SHORT TO GROUND
OR REPLACE ANY INJECTOR
THAT MEASURES UNDER 12
OHMS
± .4 OHMS.
NO BLINKING LIGHT
AT INJECTOR
To Next Page
Loading...
