1990 Chevrolet R/V, P Truck Model Electrical Diagrams & Diagnosis Manual – PDF DOWNLOAD
IMAGES PREVIEW OF THE MANUAL:
DESCRIPTION:
1990 Chevrolet R/V, P Truck Model Electrical Diagrams & Diagnosis Manual – PDF DOWNLOAD
HOW TO USE THIS MANUAL:
The purpose of this manual is to provide:
• Clean and simple electrical circuit diagrams
• Discussion of circuit electrical operation
• Simplified diagnosis and testing procedures
• Component location views.
Each electrical system or circuit will provide the following
information:
• Circuit Operation
• Circuit Diagrams
• Component Location
• Diagnosis Charts.
CIRCUIT OPERATION:
The description of circuit operation provides a simplified discussion of what is happening within each circuit. The discussion includes power application, ground paths and component operation. The explanation is tied to the circuit diagram, and in some cases, to specific switch movement or components in a circuit.
TABLE OF CONTENTS:
1990 Chevrolet R/V, P Truck Model Electrical Diagrams & Diagnosis Manual – PDF DOWNLOAD
INTRODUCTION
PAGE
HowTo Use This M a n u a l iii
Circuit Operation iii
Circuit Diagrams iii
Component Locations iii
Diagnosis Charts iii
Troubleshooting iii
Basic E le c tric ity iv
Circuit Malfunctions iv
Electrical Test Equipment iv
Circuit Wiring Repair Procedures vi
Weather-Pack Connectors vii
Metri-Pack Connectors vii
Special Tools viii
Regular Production Option (RPO) L is t ix
Abbreviation List ix
R/V TRUCK MODELS — SECTION A
SECTION—PAGE
Phantom V ie w A-1
Symptoms In d e x A-2
Fuse Block A-4
Convenience C e n te r A-5
Power Distribution (RPO L05, L 1 9 ) A-6
Power Distribution (RPO LH6, LL4) A-10
Auxiliary Battery (RPO TP2) A-12
Headlamps (With Daytime Running Lamps — Canada Only) A-14
Front Park, Marker, Roof and Hazard Lamps A-23
Directional Signal Lamps A-30
Horns A-34
Start and Charge A-36
Fuel Controls—Gasoline A-41
Glow Plugs A-48
Diesel Engine Fuel C o n tro ls A-54
Auxiliary Cooling Fan A-58
Auxiliary Fuel Tanks (RPO N L 2 ) A-60
Electronic Engine Controls—Gasoline A-64
Electronic Control Module—Diesel A-71
Transmission Converter Clutch Detent Solenoid A-76
Automatic Transmission Kickdown Solenoid (RPO M40) A-78
Air Conditioning A-80
H e a te r A-85
SECTION—PAGE
Instrument Panel: Gages and Indicators A-89
Safety Belt Warning Buzzer A-102
Audio Ala rm A-104
Brake Systems A-106
Four-Wheel Drive A-110
Cruise C o n tro l A-112
Courtesy Lamps, Cargo Lamps and Underhood Lamp A-115
R a d io A-120
Rear Defogger A-124
Power Windows A-127
Power Mirrors and Power Door Locks A-133
Pulse Wiper/Washer A-142
Rear Exterior L am p s A-146
Camper and Trailer Wiring A-156
Vacuum Systems A-158
Power Brake Booster Vacuum System A-162
Component Locator Views A-165
Bulb Data A-191
Component Locator Index A-192
P TRUCK MODELS — SECTION B
SECTION—PAGE
Phantom V ie w B-1
Symptoms In d e x B-2
Fuse Block (RPO LB4, L05 and L19) B-3
Fuse Block (RPO LL 4 ) B-4
Power Distribution (RPO LB4, L05 and L19) B-6
Power Distribution (RPO L L 4 ) B-10
Headlamps B-12
Headlamps (With Daytime Running Lamps) B-15
Park, Marker and Hazard Lamps B-20
Directional Signal Lamps B-24
Horns B-26
Wiper/Washer B-28
Start and Charge B-30
Fuel Controls—Gasoline B-35
Fuel Controls—Diesel B-38
Glow Plugs (RPO LL4) B-41
Automatic Transmission Kickdown Solenoid (RPO M40) B-44
Electronic Control Module B-46
Electronic Control Module—Pinouts B-47
(Continued on page ii)
TABLE OF CONTENTS (Continued) ‘ 7 SECTION—PAGE
Brake Warning S y s tem B-52
Cruise C o n tro l B-56
Instrument Panel: Gages and Indicators B-58
Rear Exterior L am p s B-66
Vacuum Systems B-70
Component Locator Views B-73
Bulb Data B-81
Component Locator Index B-82
P CHASSIS — SECTION C
SECTION—PAGE
Phantom V iew C-1
Symptoms In d e x C-2
Fuse Block C-3
Power Distribution (RPO L05, L 1 9 ) C-4
Headlamps C-7
Headlamps (With Daytime Running Lamps) C-10
Park, Marker and Hazard Lamps C-17
Directional Lamps C-21
Horns C-24
Start and Charge C-26
Fuel Controls—Gasoline C-30
Auxiliary Cooling Fan (RPO L19 with RPO C60) C-34
Automatic Transmission Kickdown Solenoid C-36
Electronic Control Module C-38
Electronic Control Module—Pinouts C-39
Air Conditioning C-44
H e a te r C-48
Instrument Panel: Gages and Indicators C-51
Safety Belt and Key-ln Warning B u z z e r C-58
Brake Warning Systems C-60
Overspeed Alarm (RPO U D 4 ) C-64
Cruise C o n tro l C-66
Dome Lamp C-68
Radio (RPO UM6, UM7, UU9 and U63) C-70
Power Windows C-73
Power Door Lo c k s C-76
Wiper/Washer (and RPO C D 4 ) C-78
Backup, Tail and License Lamps C-82
Vacuum Systems C-84
Component Locator Views C-87
Bulb Data C-99
Component Locator Index C-100
INDEX
SECTION—PAGE
In d e x Index-1
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