CRUISE CONTROL CRUISE CONTROL SYSTEM Cruise Control Switch Circuit
DESCRIPTION
The cruise control main switch is used to turn the cruise control system on and off, as well as operate 7 functions: SET, - (COAST), TAP-DOWN, RES (RESUME), + (ACCEL), TAP-UP and CANCEL. The SET, TAP-DOWN and - (COAST) functions, and the RES (RESUME), TAP-UP and + (ACCEL) functions are operated with the same switch. The cruise control main switch is an automatic return type switch which turns on only while operating it in the direction of each arrow and turns off after releasing it. The internal contact points of the cruise control main switch turn on with switch operation. Then the ECM reads the voltage value that has been changed by the switch operation to control the SET, - (COAST), RES (RESUME), + (ACCEL), and CANCEL functions.
WIRING DIAGRAM
PROCEDURE
*a | ON-OFF |
*b | -/SET |
*c | +/RES |
*d | CANCEL |
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Cruise Control / Data List.
Check the Data List to confirm proper functioning of the cruise control main switch.
- Powertrain > Cruise Control > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Main SW M-CPU Cruise control main switch signal (Main CPU) ON or OFF ON: Cruise control main switch (ON-OFF button) being pushed and held
OFF: Cruise control main switch (ON-OFF button) released- Cancel Switch Switch CANCEL switch signal ON or OFF ON: CANCEL switch operated
OFF: CANCEL switch released- SET/COAST Switch -/SET switch signal ON or OFF ON: -/SET switch operated
OFF: -/SET switch released- RES/ACC Switch +/RES switch signal ON or OFF ON: +/RES switch operated
OFF: +/RES switch released-
- Powertrain > Cruise Control > Data List
-
Tester Display Main SW M-CPU Cancel Switch SET/COAST Switch RES/ACC Switch - 50003 237 16,23,22,21
- OK:
When the cruise control main switch is operated, the display changes as shown above.
- Result:
Proceed to OK NG
OK
NG
Remove the cruise control main switch.
Click hereEngine / Hybrid System>CRUISE CONTROL>CRUISE CONTROL MAIN SWITCH>REMOVAL
Measure the resistance according to the value(s) in the table below.
*1 | Cruise Control Main Switch (ON-OFF button) | - | - |
*a | Component without harness connected
(Cruise Control Main Switch) |
*b | ON-OFF |
*c | +/RES | *d | -/SET |
*e | CANCEL | - | - |
- Standard Resistance:
Tester Connection Condition Specified Condition 1 - 3 Cruise control main switch (ON-OFF button) released 1 MΩ or higher Cruise control main switch (ON-OFF button) being pushed and held Below 2.5 Ω +/RES switch operated 235 to 245 Ω -/SET switch operated 617 to 643 Ω CANCEL switch operated 1509 to 1571 Ω
- Result:
Proceed to OK NG
OK
NG
*a | Front view of wire harness connector
(to Spiral Cable Sub-assembly) |
*b | Front view of wire harness connector
(to Cruise Control Main Switch) |
Remove the cruise control switch wire.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Specified Condition z4-3 - z10-3 Below 1 Ω z4-4 - z10-1 Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
Inspect the spiral cable sub-assembly.
Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>SPIRAL CABLE>INSPECTION
- Result:
Proceed to OK NG
OK
NG
Disconnect the A40 ECM connector.
Disconnect the E8 spiral cable sub-assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A40-36 (CCS) - E8-1 (CCS) Always Below 1 Ω A40-35 (ECCS) - E8-2 (ECC) Always Below 1 Ω A40-36 (CCS) or E8-1 (CCS) - Body ground Always 10 kΩ or higher A40-35 (ECCS) or E8-2 (ECC) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the B64 ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition B64-59 (E1) - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG