Inspection Procedure
- READ VALUE ON HAND-HELD TESTER
- Connect the hand-held tester to the DLC3.
- Turn the ignition switch on (IG).
- According to the display on the tester, read the "DATA LIST".
ECM:
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: When the cruise control main switch is operated, the normal conditions listed above are shown on the display.
Result:
RESULT REFERENCEOK A NG (All items are defective.) B NG (One to three items are defective.) C
- B: Go to step 2
- C: REPLACE CRUISE CONTROL MAIN SWITCH ASSY (SEE REPLACEMENT )
- A: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE PROBLEM SYMPTOMS TABLE )
- INSPECT CRUISE CONTROL MAIN SWITCH ASSY
- Disconnect the cruise control main switch connector.
- Measure the resistance according to the value (s) in the table below.
Standard:
RESISTANCE SPECIFICATIONSwitch condition Tester connection Resistance Neutral 1 - 3 10 kΩ or higher RES/+ 1 - 3 210 to 270 Ω SET/- 1 - 3 560 to 700 Ω CANCEL 1 - 3 1,380 to 1,700 Ω Main Switch OFF 1 - 3 10 kΩ or higher Main Switch ON 1 - 3 Below 1 Ω
- NG: REPLACE CRUISE CONTROL MAIN SWITCH ASSY (SEE REPLACEMENT )
- OK: Go to next step.
- INSPECT SPIRAL CABLE SUB-ASSY
- Disconnect the spiral cable connector.
- Measure the resistance according to the value (s) in the table below.
Standard:
RESISTANCE SPECIFICATIONTester connection Specification A-3 - D15-1 Below 1 Ω A-4 - D15-2 Below 1 Ω
- NG: REPLACE SPIRAL CABLE SUB-ASSY (SEE REPLACEMENT )
- OK: Go to next step.
- CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSY - ECM, BODY GROUND)
- Measure the resistance according to the value (s) in the table below.
Standard:
TESTER CONNECTION CONDITION SPECIFICATIONTester connection Condition Specification Spiral cable (D15-1) - CCS (D41-2) Always Below 1 Ω CCS (D41-2) - Body ground Always 10 kΩ or higher Spiral cable (D15-2) - E1 (B47-1) Always Below 1 Ω
- NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
- OK: REPLACE ECM (SEE REPLACEMENT )
- Measure the resistance according to the value (s) in the table below.