1992 Suzuki Swift GS, AutomaticFACTORY OEM SERVICE PROCEDURE

Fuel Injector Circuit Test (DOHC)

  1. Crank engine and check operating sound of each fuel injector. If operating sound can be heard from all 4 fuel injectors, fuel injector circuit is okay. If no operating sound at all is heard from any of the fuel injectors, go to next step. If one or more fuel injector(s) makes no operating sound, go to step 6).
  2. If no operating sound is heard at all from any of the fuel injectors, turn ignition off. Disconnect ECM 10-pin connector.
  3. Using an ohmmeter, check for continuity between ECM 10-pin connector terminals C3 and C8. See Fig 1. If continuity does not exist, check for open between terminals C3 and C8 or poor connections at fuel injector. Check for continuity between terminal C5 and ground. If continuity does not exist, check C5 wire for open or poor ground.
  4. Disconnect ohmmeter. Turn ignition on. Using a voltmeter, check for battery voltage between ECM terminal C2 and ground. If battery voltage is not present, check for open circuit. Check EFI main relay. See EFI MAIN RELAY under RELAYS. If ohmmeter and voltmeter readings are okay, go to next step.
  5. If ohmmeter and voltmeter readings are okay, check connections at ECM 10-pin connector terminal C3 to C4, C8 to C9, C5 to C10 and C2 to C7. See Fig 2. If connections are okay, substitute a known good ECM and retest.
  6. If one or more fuel injector(s) makes no operating sound, check each fuel injector connector for poor connection. If okay, check fuel injectors. See FUEL INJECTOR(S) under FUEL CONTROL.
Fig 1: Identifying ECM 10-Pin Connector Terminals (DOHC)
G90D17395Courtesy of SUZUKI OF AMERICA CORP.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.