Inspection Procedure
- READ VALUE USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Cruise Control / Data List.
- Check the Data List for proper functioning of the cruise control main switch.
Cruise Control (ECM)
CRUISE CONTROL (ECM) DATA LISTTester Display Measurement Item/Range Normal Condition Diagnostic Note Main SW M-CPU Main switch signal (Main CPU)/ ON or OFF ON: Cruise control main switch pushed
OFF: Cruise control main switch not pushed- Cancel SW CANCEL switch signal/ON or OFF ON: CANCEL switch on
OFF: CANCEL switch off- SET/COAST SW - (COAST)/SET switch signal/ON or OFF ON: - (COAST)/SET switch on
OFF: - (COAST)/SET switch off- RES/ACC SW + (ACCEL)/RES switch signal/ON or OFF ON: + (ACCEL)/RES (RESUME) switch on
OFF: + (ACCEL)/RES (RESUME) switch off- OK: When the cruise control main switch is operated, the display changes as shown above .
Result
RESULT CHARTResult Proceed to OK A NG (All items are defective) B NG (1 to 3 items are defective) C B: Go to Next Step
C: REPLACE CRUISE CONTROL MAIN SWITCH (See CRUISE CONTROL MAIN SWITCH )
A: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
- INSPECT CRUISE CONTROL MAIN SWITCH
- Remove the cruise control main switch (See CRUISE CONTROL MAIN SWITCH ).
- Measure the resistance according to the value(s) in the table below.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard Resistance
RESISTANCE SPECIFIED CONDITIONTester Connection Switch Condition Specified Condition 3 (CCS) - 1 (ECC) Neutral 10 kΩ or higher 3 (CCS) - 1 (ECC) + (ACCEL)/RES (RESUME) 216 to 264 Ω 3 (CCS) - 1 (ECC) - (COAST)/SET 567 to 693 Ω 3 (CCS) - 1 (ECC) CANCEL 1386 to 1694 Ω 3 (CCS) - 1 (ECC) Main switch on Below 1.0 Ω NG: REPLACE CRUISE CONTROL MAIN SWITCH (See CRUISE CONTROL MAIN SWITCH )
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE)
- Disconnect the Y2 connector from the spiral cable.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONTester Connection Condition Specified condition A-1 - Y2-4 Always Below 1 Ω A-3 - Y2-3 Always Below 1 Ω Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to Next Step
- CHECK SPIRAL CABLE NOTE: The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may cause airbag deployment. Be sure to read the page shown in the brackets.
HINT:
- Removal (See REMOVAL )
- Installation (See INSTALLATION )
- Remove the spiral cable (See SPIRAL CABLE ).
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONTester Connection Condition Specified Condition Y2-3 - E10-1 (CCS) The spiral cable position is center Below 1 Ω The spiral cable position is 2.5 rotations to the left The spiral cable position is 2.5 rotations to the right Y2-4 - E10-2 (ECC) The spiral cable position is center Below 1 Ω The spiral cable position is 2.5 rotations to the left The spiral cable position is 2.5 rotations to the right HINT:
The spiral cable makes a maximum of approximately 5 rotations.
NG: REPLACE SPIRAL CABLE (See SPIRAL CABLE )
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM, BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
RESISTANCE SPECIFIED CONDITIONTester Connection Condition Specified Condition E10-1 (CCS) - A37-40 (CCS) Always Below 1 Ω A37-40 (CCS) - Body ground Always 10 kΩ or higher E10-2 (ECC) - Body ground Always Below 1 Ω Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Result
RESULT CHARTResult Proceed to NG A OK (for 2ZR-FE) B OK (for 2AZ-FE) C B: REPLACE ECM (for 2ZR-FE) (See ECM )
C: REPLACE ECM (for 2AZ-FE) (See ECM )
A: REPAIR OR REPLACE HARNESS OR CONNECTOR