Isuzu N-Series. Manual — part 737

6E-370 Engine Control System (4HK1)

Special Tools and Equipment

Special Tools and Equipment

Illustration

Tool Number / Description

5-8840-2835-0 (J-35616-C)

Connector Test Adapter Kit

(With Test Lamp)

5-8840-0285-0 (J-39200)

Digital Multimeter

Tech 2 Kit

5-8840-2844-0

Fuel Pressure / Vacuum

Gauge Set (J-44638 / Fuel
Pressure / Vacuum Gauge

Assembly) (EN-47667 /

Suction Side Fuel Pressure /

Vacuum Gauge Adapter)

Breaker Box

Adapter Harness

5884028350

5884002850

5884028440

A

B

C

5-8840-0019-0 (J-23907)

Sliding Hammer

5-8840-2826-0 (EN-46720)

Fuel Injector Remover

5-8840-2675-0 (J-26999-12)

Compression Gauge

5-8840-2815-0 (EN-46722)

Gauge Adapter

Illustration

Tool Number / Description

5884026750

5884028150

International Service & Parts

Tokyo, Japan

WORKSHOP MANUAL

N-SERIES

ENGINE

SECTION 6E

Engine Control System (4JH1) 6E-1

ENGINE

Engine Control System (4JH1)

TABLE OF CONTENTS

Specifications . . . . . . . . . . . . . ... 6E-3

Temperature vs Resistance . . . . . . . .. 6E-3
Altitude vs Barometric Pressure. . . . . . 6E-3

Schematic and Routing Diagrams. . . . . . 6E-4

Vacuum Hose Routing Diagram. . . . . . 6E-4
Engine Controls Schematics . . . . . . . . 6E-5
Ground Distributions . . . . . . . . . ... 6E-15

Component Locator. . . . . . . . . . . 6E-16

Engine Controls Component Views . . . . 6E-16
Engine Control Module (ECM) Connector End Views

. . . . . . . . . . . . . . . . . . . 6E-18

Engine Controls Connector End Views . . ... 6E-20

Diagnostic Information and Procedures . . . . 6E-26

General Service Information . . . . . . ... 6E-26
Tech 2 Scan Tool . . . . . . . . . . . 6E-27
Tech 2 Data List . . . . . . . . . . . .. 6E-28
Tech 2 Data Definitions. . . . . . . . ... 6E-29
Tech 2 Output Controls . . . . . . . . ... 6E-32
Breaker Box . . . . . . . . . . . . . 6E-32
Engine Control System Check Sheet. . . .. 6E-33
Diagnostic Starting Point – Engine Controls . . 6E-34
Diagnostic System Check – Engine Controls. 6E-34
Tech 2 Does Not Power Up . . . . . . . 6E-36
Lost Communication with The Engine Control Module
(ECM). . . . . . . . . . . . . . . .. 6E-37
Engine Cranks but Does Not Run . . . . ... 6E-40
Diagnostic Trouble Code (DTC) List . . . ... 6E-43
P0100 (Symptom Code 7) (Flash Code 65) . .. 6E-61
P0100 (Symptom Code 9) (Flash Code 65) . .. 6E-63
P0100 (Symptom Code B) (Flash Code 65). .. 6E-65
P0100 (Symptom Code C) (Flash Code 65) . . 6E-68
P0110 (Symptom Code 1) (Flash Code 23) . .. 6E-71
P0110 (Symptom Code 2) (Flash Code 23) . .. 6E-74
P0115 (Symptom Code 1) (Flash Code 14) . .. 6E-76
P0115 (Symptom Code 2) (Flash Code 14) . .. 6E-79
P0180 (Symptom Code B) (Flash Code 15). .. 6E-81
P0215 (Symptom Code A) (Flash Code 52). .. 6E-82
P0215 (Symptom Code B) (Flash Code 52). .. 6E-84
P0215 (Symptom Code C) (Flash Code 52) . . 6E-86
P0215 (Symptom Code D) (Flash Code 52) . . 6E-89
P0216 (Symptom Code A,B) (Flash Code 54) .. 6E-90
P0251 (Symptom Code 6) (Flash Code 53) . .. 6E-94
P0251 (Symptom Code 7) (Flash Code 53) . .. 6E-96
P0251 (Symptom Code 9, A, B, D) (Flash Code 53)

. . . . . . . . . . . . . . . . . . ... 6E-99

P0251 (Symptom Code E) (Flash Code 53). 6E-101
P0335 (Symptom Code B, D) (Flash Code 43)

. . . . . . . . . . . . . . . . . . . 6E-103

P0335 (Symptom Code E) (Flash Code 43). 6E-107
P0380 (Symptom Code 4) (Flash Code 66) . 6E-109
P0380 (Symptom Code 8) (Flash Code 66) . 6E-112
P0381 (Symptom Code 4) (Flash Code 67) . 6E-114

P0381 (Symptom Code 8) (Flash Code 67) ... 6E-117
P0400 (Symptom Code 3) (Flash Code 32) ... 6E-119
P0400 (Symptom Code 4) (Flash Code 32) ... 6E-122
P0400 (Symptom Code 5) (Flash Code 32) ... 6E-125
P0400 (Symptom Code 8) (Flash Code 32) ... 6E-128
P0500 (Symptom Code 1, A) (Flash Code 24)

. . . . . . . . . . . . . . . . . . . 6E-130

P0500 (Symptom Code B) (Flash Code 24) ... 6E-132
P0560 (Symptom Code 1) (Flash Code 35) ... 6E-136
P0560 (Symptom Code 2) (Flash Code 35) ... 6E-138
P0560 (Symptom Code A) (Flash Code 35) ... 6E-140
P0561 (Symptom Code A) (Flash Code 18) ... 6E-142
P0561 (Symptom Code B) (Flash Code 18) ... 6E-144
P0602 . . . . . . . . . . . . . . . .. 6E-145
P0606 (Symptom Code A, B) (Flash Code 28)

. . . . . . . . . . . . . . . . . . . 6E-146

P0645 (Symptom Code 4) (Flash Code 46) ... 6E-147
P0645 (Symptom Code 8) (Flash Code 46) ... 6E-150
P0703 (Symptom Code A, B) (Flash Code 25)

. . . . . . . . . . . . . . . . . . . 6E-152

P0704 (Symptom Code 6) (Flash Code 57) ... 6E-156
P1105 (Symptom Code 1) (Flash Code 86) ... 6E-159
P1105 (Symptom Code 2) (Flash Code 86) ... 6E-160
P1110 (Symptom Code 4) (Flash Code 72) ... 6E-161
P1110 (Symptom Code 8) (Flash Code 72) ... 6E-164
P1120 (Symptom Code 1) (Flash Code 21) ... 6E-166
P1120 (Symptom Code 2) (Flash Code 21) ... 6E-169
P1120 (Symptom Code 7) (Flash Code 21) ... 6E-172
P1120 (Symptom Code 9) (Flash Code 21) ... 6E-174
P1120 (Symptom Code D) (Flash Code 21)... 6E-176
P1120 (Symptom Code E) (Flash Code 21) ... 6E-179
P1173 (Symptom Code 3) (Flash Code 22) ... 6E-182
P1173 (Symptom Code 7, A) (Flash Code 22)

. . . . . . . . . . . . . . . . . . . 6E-184

P1335 (Symptom Code A) (Flash Code 43) ... 6E-185
P1345 (Symptom Code A) (Flash Code 41) ... 6E-188
P1520 (Symptom Code A) (Flash Code 47) ... 6E-189
P1520 (Symptom Code B) (Flash Code 47) ... 6E-191
P1576 (Symptom Code 4) (Flash Code 71) ... 6E-194
P1576 (Symptom Code 8) (Flash Code 71) ... 6E-197
P1605 (Symptom Code C, D, E) (Flash Code 55)

. . . . . . . . . . . . . . . . . . . 6E-199

P1625 (Symptom Code A) (Flash Code 76) ... 6E-200
P1625 (Symptom Code B) (Flash Code 76) ... 6E-202
P1630 (Symptom Code A, B) (Flash Code 51)

. . . . . . . . . . . . . . . . . . . 6E-204

P1650 (Symptom Code A) (Flash Code 44) ... 6E-206
P1650 (Symptom Code B) (Flash Code 44) ... 6E-209
P1651 (Symptom Code A, B) (Flash Code 45)

. . . . . . . . . . . . . . . . . . . 6E-210

P1690 (Symptom Code 4) (Flash Code 77) ... 6E-213
P1690 (Symptom Code 8) (Flash Code 77) ... 6E-216

6E-2 Engine Control System (4JH1)

Glow Control System Check . . . . . . . 6E-218

Symptoms – Engine Controls. . . . . . ... 6E-221

Symptoms – Engine Controls. . . . . . 6E-221
Intermittent Conditions . . . . . . . . .. 6E-222
Hard Start. . . . . . . . . . . . . .. 6E-224
Rough, Unstable, or Incorrect Idle And Stalling

. . . . . . . . . . . . . . . . . .. 6E-226

Cut Out, Misses. . . . . . . . . . . . 6E-228
Surges/Chuggles. . . . . . . . . . ... 6E-230
Lack of Power, Sluggishness, Sponginess. . 6E-232
Hesitation, Sag, Stumble. . . . . . . ... 6E-234
Fuel Knock/Combustion Noise. . . . . .. 6E-237
Poor Fuel Economy. . . . . . . . . ... 6E-238
Excessive Smoke (Black Smoke) . . . . . 6E-240
Excessive Smoke (White Smoke) . . . . . 6E-241

Repair Instructions . . . . . . . . . . ... 6E-243

Engine Control Module (ECM)
Replacement . . . . . . . . . . . . . 6E-243
Service Programming System (SPS) Description

. . . . . . . . . . . . . . . . . .. 6E-243

Service Programming System (SPS)
(Remote Procedure). . . . . . . . . .. 6E-244
Service Programming System (SPS)
(Pass-Thru Procedure). . . . . . . . .. 6E-246
Accelerator Pedal Position (APP)
Sensor Replacement. . . . . . . . . . 6E-246
Crankshaft Position (CKP) Sensor Replacement

. . . . . . . . . . . . . . . . . .. 6E-247

EGR Solenoid Valve Replacement . . . ... 6E-247
Engine Coolant Temperature (ECT)
Sensor Replacement. . . . . . . . . . 6E-248
Mass Air Flow (MAF) / Intake Air Temperature (IAT)
Sensor Replacement. . . . . . . . . . 6E-248
Vehicle Speed Sensor (VSS) Replacement ... 6E-249

Description and Operation . . . . . . . ... 6E-250

Engine Control Module (ECM) Description ... 6E-250
Engine Control Component Description. . 6E-251
Fuel Injection System Description. . . . . 6E-254
Low Pressure Fuel Circuit Description . . ... 6E-256
High Pressure Fuel Circuit Description . . .. 6E-258
Timing Control Device Description. . . . . 6E-260
Exhaust Gas Recirculation (EGR)
System Description . . . . . . . . . . 6E-263
Turbocharger Description. . . . . . . ... 6E-264

Special Tools and Equipment . . . . . . ... 6E-265

Special Tools and Equipment . . . . . . 6E-265