Section A · Pages 66–101 (36 pages)

R/V: Starting, Charging and Engine Controls

From the 1991 GMC R/V and P Electrical Diagrams and Diagnosis

Start and charge circuits with step-by-step diagnosis for no-crank conditions, followed by the engine and transmission control diagrams: ECM pinouts, inputs and outputs, PCM and TCM pinouts, inputs and outputs, hot fuel handling, torque converter clutch control, ignition, and fuel control and idle air control.

Read this section free, starting at page 66

What this section covers

  • Start and charge diagnosis
  • ECM pinouts, inputs and outputs
  • PCM and TCM pinouts
  • Torque converter clutch control
  • Ignition
  • Fuel control and idle air control
  • Hot fuel handling
Year
1991
Make
GMC
Vehicle
Light Duty Trucks, P Forward Control, R/V Trucks, Trucks
Type
Wiring Diagrams
Models
R/V, P
Publication
X-9140
Pages
379

What’s inside

Introduction

  1. Introduction and How to Use This Manualpp. 1–13

R/V models (Section A)

  1. AR/V: Phantom Views and Symptom Indexpp. 14–22
  2. AR/V: Power, Fuse and Ground Distributionpp. 23–35
  3. AR/V: Headlamps, Hazard and Turn Lampspp. 36–60
  4. AR/V: Horns, Cigarette Lighter and Wiperspp. 61–65
  5. AR/V: Starting, Charging and Engine Controlspp. 66–101
  6. AR/V: Cooling Fan, Heater and Air Conditioningpp. 102–112
  7. AR/V: Instrument Cluster, Gages and Warning Indicatorspp. 113–126
  8. AR/V: Rear Wheel Antilock Brakes and Brake Warningpp. 127–130
  9. AR/V: Dome Lamps, Cruise Control and Four-Wheel Drivepp. 131–139
  10. AR/V: Power Mirrors, Door Locks and Windowspp. 140–155
  11. AR/V: Radio and Rear Defoggerpp. 156–161
  12. AR/V: Rear Lamps and Trailer Towpp. 162–173
  13. AR/V: Vacuum Systemspp. 174–178
  14. AR/V: Component Locator Views and Indexpp. 179–215

P commercial models (Section B)

  1. BP Commercial: Phantom Views and Power Distributionpp. 216–236
  2. BP Commercial: Lamps, Horns and Wiperspp. 237–253
  3. BP Commercial: Starting, Charging and Engine Controlspp. 254–280
  4. BP Commercial: Instrument Panel and Brake Warningpp. 281–289
  5. BP Commercial: Rear Lamps and Vacuum Systempp. 290–295
  6. BP Commercial: Component Locator Views and Indexpp. 296–304

P motorhome (Section C)

  1. CP Motorhome: Phantom Views and Power Distributionpp. 305–316
  2. CP Motorhome: Lamps, Horns and Wiperspp. 317–332
  3. CP Motorhome: Starting, Charging and Engine Controlspp. 333–351
  4. CP Motorhome: Cooling Fan, A/C Provisions and Cruise Controlpp. 352–356
  5. CP Motorhome: Instrument Panelpp. 357–363
  6. CP Motorhome: Rear Lamps and Vacuum Systempp. 364–369
  7. CP Motorhome: Component Locator Views and Indexpp. 370–376

Index

  1. General IndexAlphabetical index of every circuit and component with its page in Section A, B or C.pp. 377–379

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