Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSCION2006XB L4-1.5L (1NZ-FE)REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURES
2006 Scion xB L4-1.5L (1NZ-FE)
Symptom Related Diagnostic Procedures
2006 Scion xB L4-1.5L (1NZ-FE)SECTION Symptom Related Diagnostic Procedures
PROBLEM SYMPTOMS TABLE
HINT:
^ Use the table to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
^ The Matrix Chart is divided into 3 chapters. When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 2 to proceed to 3, proceed as instructed.
^ If the instruction "Proceed to next circuit inspection shown in problem symptoms table" is given in the flowchart for each circuit, proceed to the next suspected area in the table.
^ If the problem still occurs even though there are no malfunctions in any of the circuits, check the ECM and replace it if necessary.
CHAPTER 1: ELECTRICAL CIRCUIT MATRIX CHART
CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR
CHAPTER 3: OFF-VEHICLE REPAIR
HINT:
^ Use the table to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
^ The Matrix Chart is divided into 3 chapters. When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 2 to proceed to 3, proceed as instructed.
^ If the instruction "Proceed to next circuit inspection shown in problem symptoms table" is given in the flowchart for each circuit, proceed to the next suspected area in the table.
^ If the problem still occurs even though there are no malfunctions in any of the circuits, check the ECM and replace it if necessary.
CHAPTER 1: ELECTRICAL CIRCUIT MATRIX CHART
CHAPTER 1: ELECTRICAL CIRCUIT MATRIX CHART:
CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR
CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR (PART 1):
CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR (PART 2):
CHAPTER 3: OFF-VEHICLE REPAIR
CHAPTER 3: OFF-VEHICLE REPAIR:
RENDER: 1.0x
NO RELATED
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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.