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Resistance Check

  1. Remove ECM from its bracket referring to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION .
    CAUTION: Never touch terminals of ECM itself or connect voltmeter or ohmmeter (2).
  2. Connect special tool (A) to ECM connectors (1) securely.

    Special Tool 

    (A): 09933-06520 

    NOTE: Do not connect the other connector of special tool to ECM.
  3. Check resistance between each pair of terminals of special tool connectors as listed in the following table.
    CAUTION:
    • Be sure to connect ohmmeter probe from wire harness side of coupler.
    • Be sure to turn OFF ignition switch for this check.
    • Resistance in the following table represents that measured when parts temperature is 20 °C (68 °F).
Fig 1: Checking Resistance Between Terminals Of Special Tool Connectors
G05472785Courtesy of SUZUKI OF AMERICA CORP.
RESISTANCE CHART

Terminals Circuit Standard resistance Condition
E23-6 to E23-2/3 Throttle actuator control relay 160 - 240 Ω -
C37-15 to E23-2/3 Fuel injector No.1 10 - 14 Ω -
C37-34 to E23-2/3 Fuel injector No.2 10 - 14 Ω -
C37-14 to E23-2/3 Fuel injector No.3 10 - 14 Ω -
C37-33 to E23-2/3 Fuel injector No.4 10 - 14 Ω -
C37-13 to E23-2/3 Fuel injector No.5 10 - 14 Ω -
C37-32 to E23-2/3 Fuel injector No.6 10 - 14 Ω -
C37-12 to E23-2/3 EGR valve (stepping motor No.1 coil) 20 - 24 Ω -
C37-31 to E23-2/3 EGR valve (stepping motor No.2 coil) 20 - 24 Ω -
C37-11 to E23-2/3 EGR valve (stepping motor No.3 coil) 20 - 24 Ω -
C37-30 to E23-2/3 EGR valve (stepping motor No.4 coil) 20 - 24 Ω -
C37-10 to E23-2/3 EVAP canister purge valve 25 - 30 Ω -
C37-29 to E23-2/3 IMT vacuum solenoid valve 33 - 45 Ω -