2002 Isuzu Rodeo LS, 2.2 DFACTORY OEM SERVICE PROCEDURE

Ground Circuits

  1. Turn ignition off. Disconnect specified PCM harness connectors. Using a DVOM, measure resistance between ground and PCM ground terminals. See POWERTRAIN CONTROL MODULE GROUND CIRCUIT TERMINALS  table. Resistance should be zero ohms. If problem is found, locate and repair open suspect circuit. If no problem is found, go to next step.
    POWERTRAIN CONTROL MODULE GROUND CIRCUIT TERMINALS

    Vehicle & PCM Harness Connector Terminal No.
    Axiom (1)
    E-34 (Blue) 1 & 40
    E-35 (Red) 1, 23 & 40
    Passport (1)
    F (Blue) F1 & F40
    S (Red) S1, S23 & S40
    Rodeo (2.2L) & Rodeo Sport (2.2L) (2)
    C-2 (White) C8 & C9
    Rodeo (3.2L), Rodeo Sport (3.2L) & Trooper (1)
    E-21 (Blue) 1 & 40
    E-22 (Red) 1, 23 & 40
    (1) On Axiom, Passport, Rodeo and Rodeo Sport 3.2L, PCM is located at left rear of engine compartment, near air filter housing. On Trooper, PCM is located at right rear of engine compartment.
    (2) On Rodeo and Rodeo Sport 2.2L, PCM is located under center console in front of shifter. To access PCM, see POWERTRAIN CONTROL MODULE REPLACEMENT under POWERTRAIN CONTROL MODULE in SELF-DIAGNOSTICS - RODEO & RODEO SPORT 2.2L article.
  2. Reconnect PCM harness connectors. Using a DVOM, connect negative lead to ground and backprobe positive lead of voltmeter to each ground terminal. With vehicle running, voltmeter should indicate less than one volt. If voltmeter reading is more than specified, check ground circuit for open, short, corrosion or loose connection. If problem is found, repair as necessary.
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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.

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