Inspection Procedure
- READ VALUE USING TECHSTREAM (CRUISE CONTROL MAIN SWITCH)
- Using the Techstream, read the Data List.
Cruise Control
DATA LIST - CRUISE CONTROLTester Display Measurement Item/Range Normal Condition Diagnostic Note CCS Main SW M-CPU Cruise control main switch (Main CPU) / ON or OFF ON: Cruise control main switch (Main CPU) on
OFF: Cruise control main switch (Main CPU) off- Cancel Switch CANCEL switch signal / ON or OFF ON: CANCEL switch on
OFF: CANCEL switch off- SET/COAST Switch -SET switch signal / ON or OFF ON: -SET switch on
OFF: -SET switch off- RES/ACC Switch +RES switch signal / ON or OFF ON: +RES switch on
OFF: +RES switch off- CCS Main SW S-CPU Cruise control main switch (Sub CPU) / ON or OFF ON: Cruise control main switch (Sub CPU) on
OFF: Cruise control main switch (Sub CPU) off- OK: The Techstream display changes according to operation of cruise control main switch.
NG: Go to step 2
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
- Using the Techstream, read the Data List.
- INSPECT CRUISE CONTROL MAIN SWITCH
- Remove the cruise control main switch (See REMOVAL ).
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Switch Condition Specified Condition 1-3 Neutral 1 MΩ or higher Pushed to +RES 235 to 245 Ω Pushed to -SET 620 to 640 Ω Pushed to CANCEL 1510 to 1570 Ω Main switch pushed off 1 MΩ or higher Main switch pushed on Below 2.5 Ω
NG: REPLACE CRUISE CONTROL MAIN SWITCH (See REMOVAL )
OK: Go to next step
- INSPECT CRUISE CONTROL SWITCH WIRE
- Remove the cruise control switch wire.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition Z36-3 - 3 Always Below 1 Ω Z36-4 -1
NG: REPLACE CRUISE CONTROL SWITCH WIRE
OK: Go to next step
- INSPECT SPIRAL CABLE
- Check the spiral cable and connector for scratches, cracks, dents and chips. If any defects are found, replace the spiral cable with a new one.
- Check the spiral cable.
- Set the spiral cable to the center position (See REMOVAL ).
- After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise, and measure the resistance according to the value(s) in the table below. Then rotate the spiral cable 5 times counterclockwise, and measure the resistance according to the value(s) in the table below.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition Z36-3 - E12-1 (CCS) Always Below 1 Ω z36-4 - E12-2 (ECC) - After setting the spiral cable to the center position, rotate the spiral cable 2.5 times clockwise. Then while rotating the spiral cable 5 times counterclockwise, measure the resistance according to the value(s) in the table below.NOTE: As the spiral cable may break, do not rotate the spiral cable more than the specified amount.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition Z36-3 - E12-1 (CCS) Always Below 1 Ω 236-4 - E12-2 (ECC)
NG: REPLACE SPIRAL CABLE (See REMOVAL )
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM AND BODY GROUND)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the E12 spiral cable connector.
- Disconnect the A38 ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
STANDARD RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition E12-1 (CCS) - A38-45 (CCS) Always Below 1 Ω E12-1 (CCS) - Body ground Always 10 kΩ or higher E12-2 (ECC) - Body ground Always Below 1 Ω
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE ECM (See ECM )