Toyota RAV4 manuals

Toyota Sienna Service Manual: How to proceed with troubleshooting


1 Vehicle brought to workshop

2 Customer problem analysis

3 Connect the obd ii scan tool or intelligent tester to dlc3

4 Check and clear dtcs and freeze frame data

Hint: (see page ax-27).

5 Visual inspection

6 Setting the Check Mode Diagnosis

HINT: (See page AX-28).

7 Problem Symptom Confirmation

HINT: (See page AX-9).

8 Symptom Simulation

HINT: (See page IN-35).

9 DTC Check

HINT: (See page AX-27).

10 Basic Inspection

HINT: (See page AX-127, AX-123 and AX-148).

11 Mechanical System Test

HINT: (See page AX-12).

12 Hydraulic Test

HINT: (See page AX-14).

13 Manual Shifting Test

HINT: (See page AX-15).

14 Problem Symptoms Table Chapter 1

HINT: (See page AX-19).

15 Problem Symptoms Table Chapter 2

HINT: (See page AX-19).

16 Part Inspection

17 DTC Chart

HINT: (See page AX-35).

18 Circuit Inspection

19 Repair or Replace

20 Confirmation Test


System description
1. SYSTEM DESCRIPTION (a) The ECT (Electronic controlled automatic transmission/transaxle) is an automatic transmission/transaxle that electronically controls shift timing using the ECM. The ECM d ...

Road test
1. PROBLEM SYMPTOM CONFIRMATION (a) Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that the transaxle does not shift up, shift down, or the ...

Other materials:

1. INSPECT VENTILATION VALVE (a) Install a clean hose to the ventilation valve. (b) Check the ventilation valve operation. (1) Blow air into the cylinder head side, and check that air passes through easily. NOTICE: Do not suck air through the valve. Petroleum substances i ...

Initialization not Completed
DTC C2177/77 Initialization not Completed DESCRIPTION Initialization is necessary after replacing any of the ECUs, tires with different tire pressure, or tire pressure warning valve and transmitter, after rotating the tires or when a new vehicle is delivered. WIRING DIAGRAM INSPECTI ...

Taillight Relay Circuit
DESCRIPTION The Multiplex network body ECU controls TAIL relay when signal is received from headlight dimmer switch assembly. WIRING DIAGRAM INSPECTION PROCEDURE 1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER Connect the intelligent tester to DLC3.  Turn the ignition switch ON and ...

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