Cruise Control Switch Circuit [08/2013 - ]: Procedure
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT CRUISE CONTROL SWITCH
- Remove the cruise control switch. Refer to REMOVAL [08/2013 - ] .
- Measure the resistance according to the value(s) in the table below.TEXT IN ILLUSTRATION
*1 Cruise Control Switch (ON-OFF button) - - *a Component without harness connected
(Cruise Control Switch)*b ON-OFF *c +/RES *d -/SET *e MODE *f CANCEL Standard Resistance
Tester Connection Condition Specified Condition 1 - 2 MODE Below 2.5 Ω 1 - 3 Cruise control switch ON-OFF button not pressed 1 MΩ or higher Cruise control switch ON-OFF button pressed Below 2.5 Ω +/RES 235 to 245 Ω -/SET 617 to 643 Ω CANCEL 1509 to 1571 Ω - Reinstall the cruise control switch. Refer to INSTALLATION [08/2013 - ] .
NG → See step 7
OK: Go to next step
- CHECK CRUISE CONTROL SWITCH WIRE (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - CRUISE CONTROL SWITCH)
- Remove the cruise control switch wire.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection Condition Specified Condition z6-4 - Cruise control switch side connector terminal 1 Always Below 1 Ω z6-1 - Cruise control switch side connector terminal 2 Always Below 1 Ω z6-3 - Cruise control switch side connector terminal 3 Always Below 1 Ω TEXT IN ILLUSTRATION*a Front view of wire harness connector
(to Spiral Cable with Sensor Sub-assembly)*b Front view of wire harness connector
(to Cruise Control Switch) - Reinstall the cruise control switch wire.
NG → REPAIR OR REPLACE CRUISE CONTROL SWITCH WIRE
OK: Go to next step
- INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY NOTE:
The spiral cable with sensor sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable with sensor sub-assembly may prevent the airbag from deploying. Be sure to read the information shown in the brackets.
HINT:
- Removal. Refer to REMOVAL [08/2013 - ]
- Installation. Refer to INSTALLATION [08/2013 - ]
- Remove the spiral cable with sensor sub-assembly.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection Condition Specified Condition z6-1 - H22-8 (R/N) Center 3 Ω or less 2.5 rotations to the left 2.5 rotations to the right z6-3 - H22-1 (CCS) Center 3 Ω or less 2.5 rotations to the left 2.5 rotations to the right z6-4 - H22-2 (ECC) Center 3 Ω or less 2.5 rotations to the left 2.5 rotations to the right - After setting the spiral cable with sensor sub-assembly to the center position, rotate the spiral cable with sensor sub-assembly 2.5 times clockwise. Then while rotating the spiral cable with sensor sub-assembly 5 times counterclockwise, measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection Condition Specified Condition z6-1 - H22-8 (R/N) Always 3 Ω or less z6-3 - H22-1 (CCS) Always 3 Ω or less z6-4 - H22-2 (ECC) Always 3 Ω or less TEXT IN ILLUSTRATION*a Component without harness connected
(Spiral Cable with Sensor Sub-assembly)*b Cruise Control Switch Side *c Vehicle Side HINT:
The spiral cable with sensor sub-assembly makes a maximum of approximately 5 rotations.
- Reinstall the spiral cable with sensor sub-assembly.
NG → See step 8
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY)
- Disconnect the H75 driving support ECU assembly connector.
- Disconnect the H22 spiral cable with sensor sub-assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection Condition Specified Condition H75-23 (CCS) - H22-1 (CCS) Always 3 Ω or less H75-10 (CCHG) - H22-8 (R/N) Always 3 Ω or less Standard Resistance (Check for Short)
Tester Connection Condition Specified Condition H75-23 (CCS) or H22-1 (CCS) - Body ground Always 1 MΩ or higher H75-10 (CCHG) or H22-8 (R/N) - Body ground Always 1 MΩ or higher - Reconnect the H22 spiral cable with sensor sub-assembly connector.
- Reconnect the H75 driving support ECU assembly connector.
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - BODY GROUND)
- Disconnect the H22 spiral cable with sensor sub-assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open)
Tester Connection Condition Specified Condition H22-2 (ECC) - Body ground Always Below 1 Ω - Reconnect the H22 spiral with sensor cable sub-assembly connector.
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 6
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ]
- REPLACE CRUISE CONTROL SWITCH. Refer to REMOVAL [08/2013 - ]
- REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY. Refer to REMOVAL [08/2013 - ]