Section 5H - Fuel Injection System Troubleshooting
Scan Tool Normal Specifications . . . . . .
Important Preliminary Checks . . . . . . . . .
Before Starting . . . . . . . . . . . . . . . . . . .
Visual / Physical Check . . . . . . . . . . . .
Intermittents . . . . . . . . . . . . . . . . . . . . . . . .
Hard Start Symptom . . . . . . . . . . . . . . . . .
Surges and/or Chuggles Symptom . . . .
Lack of Power, Sluggish
5H-2
5H-3
5H-3
5H-3
5H-4
5H-5
5H-7
Detonation / Spark Knock Symptom . . .
5H-11
Hesitation, Sag, Stumble Symptom . . . . 5H-13
Cuts Out, Misses Symptom . . . . . . . . . . . 5H-15
Rough, Unstable or Incorrect Idle,
Stalling Symptom . . . . . . . . . . . . . . . . . . . 5H-17
Poor Fuel Economy Symptom . . . . . . . . 5H-20
Dieseling, Run-On Symptom . . . . . . . . . . 5H-22
Backfire Symptom . . . . . . . . . . . . . . . . . . . 5H-23
or Spongy Symptom . . . . . . . . . . . . . . . .
5H-9
Section 5I - Diagnostics
Special Tools . . . . . . . . . . . . . . . . . . . . . . .
5I-2
5I-4
5I-4
5I-5
Clearing Trouble Codes . . . . . . . . . . . . . .
5I-48
Diagnostic Circuit Check . . . . . . . . . . . . .
Scan Tool Normal Specifications . . . .
Diagnostic Trouble Codes . . . . . . . . . . . .
ECM Connector and
Clearing Codes Using
CodeMate Tester . . . . . . . . . . . . . . . . .
Clearing Codes Using Scan Tool . . . .
Diagnostic Testing . . . . . . . . . . . . . . . . . . .
Code 14 Engine Coolant Temperature
(ECT) Sensor Circuit . . . . . . . . . . . . .
Code 15 Engine Coolant Temperature
(ECT) Sensor Circuit . . . . . . . . . . . . .
Code 21 Throttle Position
5I-48
5I-48
5I-49
EFI Symptoms Chart . . . . . . . . . . . . . . . .
J-1 Circuits with MEFI 1 . . . . . . . . . . .
J-2 Circuits with MEFI 1 . . . . . . . . . . .
J-1 Circuits with MEFI 3 . . . . . . . . . . .
J-2 Circuits with MEFI 3 . . . . . . . . . . .
Wiring System Diagrams . . . . . . . . . . . . .
MEFI 1 . . . . . . . . . . . . . . . . . . . . . . . . . .
MEFI 3 . . . . . . . . . . . . . . . . . . . . . . . . . .
General Diagnostic Tests . . . . . . . . . . . . .
On-Board Diagnostic
(OBD) System Check . . . . . . . . . . . . .
Chart A-1 No MIL or No DLC Data .
Chart A-2 MIL ON Steady -
Will Not Flash DTC 12 . . . . . . . . . . . .
Chart A-3 Engine Cranks But
Will Not Run . . . . . . . . . . . . . . . . . . . . .
Chart A-4 Fuel System Diagnosis . .
Chart A-5 Fuel System Electrical Test
Chart A-6 EFI System /
Ignition Relay Check . . . . . . . . . . . . .
Chart A-7 Ignition System Check . . .
Chart A-8 Idle Air Control
5I-6
5I-6
5I-8
5I-10
5I-12
5I-14
5I-14
5I-18
5I-21
5I-49
5I-52
5I-54
5I-57
5I-60
5I-62
5I-64
(TP) Sensor Circuit . . . . . . . . . . . . . . .
Code 22 Throttle Position
(TP) Sensor Circuit . . . . . . . . . . . . . . .
Code 23 Intake Air Temperature
(IAT) Sensor Circuit . . . . . . . . . . . . . .
Code 25 Intake Air Temperature
(IAT) Sensor Circuit . . . . . . . . . . . . . .
Code 33 Manifold Absolute Pressure
(MAP) Sensor Circuit . . . . . . . . . . . . .
Code 34 Manifold Absolute Pressure
(MAP) Sensor Circuit . . . . . . . . . . . . .
Code 41 Ignition Control (IC) Circuit
Code 42 Ignition Control (IC) Circuit
Code 43 Knock Sensor (KS) Circuit
Code 44 Knock Sensor (KS) Circuit
Code 45 Ignition Coil Driver Fault . .
Code 51 Calibration Memory Failure
Code 52 EEPROM Failure . . . . . . . .
Code 61 Fuel Pressure (FP) Circuit .
Code 62 Fuel Pressure
5I-21
5I-23
5I-25
5I-27
5I-29
5I-31
5I-67
5I-70
5I-72
5I-74
5I-77
5I-80
5I-82
5I-83
5I-84
5I-33
5I-35
(IAC) Functional Test . . . . . . . . . . . . .
Discrete Input Circuit Check -
Non-Scan Only . . . . . . . . . . . . . . . . . .
5I-41
5I-43
(FP) Sensor Circuit . . . . . . . . . . . . . . .
5I-87
90-861328--1
NOVEMBER 1999
Page xi
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 1262 CID, Mercury MerCruiser 262 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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