SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSATURN2003ION 3 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 5 (AUTOMATIC TRANSMISSION - VT25-E)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P0602: ECM NOT PROGRAMMEDTEST DESCRIPTION
2003 Saturn Ion 3 4D Sedan, Standard

Test Description

2003 Saturn Ion 3 4D Sedan, StandardSECTION Test Description
WARNING: This page is about a different variant/trim than selected.

The number below refers to the step number on the diagnostic table.

  1. 3. This step eliminates the TCM software as a possible cause of the DTC. If the DTC continues to set after reprogramming, the fault is in the TCM hardware.
    Fig 1: DTC P0602
    G02125925Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

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

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote 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.