Cruise Control Switch Circuit: Wiring Diagram
- READ VALUE ON INTELLIGENT TESTER
- Connect the intelligent tester to the DLC3.
- Turn the engine switch on (IG) and turn the intelligent tester main switch on.
- Check the DATA LIST for proper functioning of the cruise control main switch.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
ECM (Cruise control):
DATA LIST REFERENCE CHARTItem Measurement Item / Di(Range) Normal Condition Diagnostic Note MAIN SW (MAIN) Main switch signal (Main CPU) / ON or OFF ON: Main switch ON (Pushed on)
OFF: Main switch OFF (Pushed off)- CANCEL SW CANCEL switch signal / ON or OFF ON: CANCEL switch ON
OFF: CANCEL switch OFF- SET/COAST SW SET/COAST switch signal / ON or OFF ON: - (COAST)/SET switch ON
OFF: - (COAST)/SET switch OFF- RES/ACC SW RES/ACC 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 REFERENCEResult Proceed to OK A NG (all items are defective) B NG (1 to 3 items are defective) C A : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
C : REPLACE CRUISE CONTROL MAIN SWITCH
B: Go To Next Step
- INSPECT CRUISE CONTROL MAIN SWITCH
- Disconnect the cruise control main switch connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION AND SPECIFIED CONDITION CHARTTester Connection Switch Condition Specified Condition A-1 (ECC) - A-2 (R/N), A-1 (ECC) - A-3 (CCS) Neutral 10 kΩ or higher A-1 (ECC) - A-3 (CCS) + (ACCEL)/RES (RESUME) 216 to 264 Ω A-1 (ECC) - A-3 (CCS) - (COAST)/SET 567 to 693 Ω A-1 (ECC) - A-3 (CCS) CANCEL 1,386 to 1,694 Ω A-1 (ECC) - A-3 (CCS) Main Switch off 10 kΩ or higher A-1 (ECC) - A-3 (CCS) Main Switch on Below 1Ω A-1 (ECC) - A-2 (R/N) Main Switch on and MODE Switch on Below 1Ω NG : REPLACE CRUISE CONTROL MAIN SWITCH
OK : Go To Next Step
- INSPECT SPIRAL CABLE NOTE: The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the example shown in the brackets.
HINT:
- Removal (See REMOVAL )
- Installation (See INSTALLATION )
- Remove the spiral cable.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION AND SPECIFIED CONDITION CHARTTester Condition Spiral Cable Position Specified Condition m1-1 - J24-7 Center Below 1 Ω 2.5 rotations to the left 2.5 rotation to the right m1-3 - J24-1 Center Below 1Ω 2.5 rotation to the left 2.5 rotation to the right m1-4 - J24-2 Center Below 1Ω 2.5 rotation to the left 2.5 rotation to the right HINT:
The spiral cable makes a maximum of approximately 5 rotations.
NG : REPLACE SPIRAL CABLE
OK : Go To Next Step
- CHECK WIRE HARNESS (SPIRAL CABLE - ECM)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION AND SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition J24-1 - A6-31 (CCS) Always Below 1Ω J24-7 - A5-20 (CCHG) Always Below 1Ω J24-1 - Body ground Always 10 kΩ or higher J24-7 - Body ground Always 10 kΩ or higher NG : REPAIR OR REPLACE HARNESS OR CONNECTOR
OK : Go To Next Step
- CHECK WIRE HARNESS (SPIRAL CABLE - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION AND SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition J24-2 - Body ground Always Below 1Ω NG : REPAIR OR REPLACE HARNESS OR CONNECTOR
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE