Mercury MerCruiser D2.8L D-Tronic Service Manual page 601

SERVICE MANUAL NUMBER 22
TEST DESCRIPTION
Verify continuity between the following:
Verify the sensor resistance between terminals 1 and 2 of the sensor:
DIAGNOSTIC HELP:
Verify the following:
•
Open or short in the CKT Pin 11 or CKT Pin 12.
•
Defective sensor.
•
Defective ECM.
Instrumented Injector failure influences engine performance as follows:
•
FUEL QUANTITY ACTUATION: Maximum engine rpm is 80% of the normal
operating range (35% of fuel quantity reduction).
•
LOW IDLE SETPOINT VALUE: The engine operates at 850 rpm for the first 72
seconds after engine start up and then goes to 700 rpm (normal idle).
•
TIMING ADVANCE: Timing actuation is in open loop which means the engine may
be slightly noisier.
IMPORTANT: Torque the Instrumented Injector to specification when replacing.
90-860074--1 FEBRUARY 2002
ECM 68 PIN CONNECTOR
11
12
RESISTANCE (Ohm)
100
2 TERMINAL CONNECTOR
2 (is shield wire, also)
1
MINIMUM / MAXIMUM MEASUREMENT
90 - 110
EDI DIAGNOSIS
Page 5E-33