Mercury MerCruiser MCM 454 Mag MPI Service Manual page 698

SERVICE MANUAL NUMBER 23
Table Of Contents
Clearing Trouble Codes
Clearing Codes Using Diagnostic Code
Tool . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearing Codes Using Scan Tool
Diagnostic Testing Without A Scan Tool
Code 14 (1 of 3): Engine Coolant
Temperature (ECT) Sensor Circuit
Code 14 (2 of 3): Engine Coolant
Temperature (ECT) Sensor Circuit
Code 14 (3 of 3): Engine Coolant
Temperature (ECT) Sensor Circuit
Code 21 (1 of 2): Throttle Position (TP)
Sensor Circuit
Code 23 (1 of 2): Intake Air Temperature
(IAT) Sensor Circuit
Code 33 (1 of 3): Manifold Absolute
Pressure (MAP) Sensor Circuit
Code 42 (1 of 3): Ignition Control (IC)
Circuit . . . . . . . . . . . . . . . . . . . . . . . . . .
Code 43 (1 of 3): Knock Sensor (Ks)
Circuit . . . . . . . . . . . . . . . . . . . . . . . . .
Code 51 (1 of 1): Calibration Memory
Failure . . . . . . . . . . . . . . . . . . . . . . . . .
Index
90-861326--1 MARCH 1999
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FUEL SYSTEM
Section 5F - Trouble Code Diagnostics-
454 / 502 MAG MPI & 8.2L MPI
. . . . . . . . . . . . . . 5F-3
5F-3
. . . 5F-3
5F-4
. 5F-4
. 5F-5
. 5F-6
. . . . . . . . . . . . . . . . . . 5F-7
. . . . . . . . . . . . . 5F-9
. . . . 5F-11
5F-14
5F-17
5F-20
TROUBLE CODE DIAGNOSTICS - 454/502 MAG MPI & 8.2L MPI
Diagnostic Testing Using A Scan Tool
Code 14 (1 of 2): Engine Coolant
Temperature (ECT) Sensor Circuit
(Scan) . . . . . . . . . . . . . . . . . . . . . . . . .
Code 21 (1 of 3): Throttle Position
(TP) Sensor Circuit
Code 21 (3 of 3): Throttle Position
(TP) Sensor Circuit
Code 23 (1 of 2): Intake Air Temperature
(IAT) Sensor Circuit
Code 33 (1 of 3): Manifold Absolute
Pressure (MAP) Sensor Circuit
Code 42 (1 of 3): Ignition Control (IC)
Circuit . . . . . . . . . . . . . . . . . . . . . . . .
Code 43 (1 of 3): Knock Sensor (KS)
Circuit . . . . . . . . . . . . . . . . . . . . . . . . .
Code 51 (1 of 2): Calibration Memory
Failure . . . . . . . . . . . . . . . . . . . . . . . . .
. . 5F-21
5F-21
. . . . . . . . . . . . . . 5F-23
. . . . . . . . . . . . . . 5F-25
. . . . . . . . . . . . . . 5F-26
. . . . 5F-28
5F-31
5F-34
5F-37
Page 5F-1
5
F