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.
Inspection Procedure
When the pattern select switch (2ND) is pushed, switch contact is made and 2nd mode is selected. To cancel 2nd mode, push the pattern select switch (2ND) once again.
HINT:
2nd mode is automatically canceled when the engine switch is turned off.
- DRIVING TEST
HINT:
The driving test should be performed on a paved road (nonskid road).
- Start the engine.
- Turn the 2ND switch off (normal drive mode).
- Confirm vehicle response by driving from a parked position to fully depressing the accelerator pedal.
- Turn the 2ND switch on and perform the same check as above.
When driving the vehicle with the 2ND switch on and off, check that there is a difference in acceleration.
OK: There is a difference in acceleration.
NG: Go to step 2
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
- INSPECT NO. 1 PATTERN SELECT SWITCH ASSEMBLY (2ND)
- Remove the No. 1 pattern select switch assembly (See PATTERN SELECT SWITCH ).
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Switch Condition Specified Condition 2 (2ND) - 3 (E) Pattern select switch (2ND) and held pressed Below 1 Ω 2 (2ND) - 3 (E) Pattern select switch (2ND) released 10 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE NO. 1 PATTERN SELECT SWITCH ASSEMBLY (See PATTERN SELECT SWITCH )
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (NO. 1 PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND)
- Disconnect the V5 No. 1 pattern select switch assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition V5-3 (E) - Body ground Always Below 1 Ω NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (NO. 1 PATTERN SELECT SWITCH ASSEMBLY - ECM)
- Disconnect the A38 ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| A38-4 (SNWI) - Body ground | Pattern select switch (2ND) pressed and held | Below 1 Ω |
| A38-4 (SNWI) - Body ground | Pattern select switch (2ND) released | 10 kΩ or higher |
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
Use the Manual With the Right Hardware
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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.
