Toyota Tacoma (2015-2018) Service Manual: Cruise Control Switch Circuit
DESCRIPTION
This circuit sends signals to the ECM depending on the cruise control main switch condition.
The battery supplies the positive (+) battery voltage to the cruise control main switch. Then terminal CCS of the ECM receives the voltage as the signal according to the switch condition.
WIRING DIAGRAM
PROCEDURE
|
1. |
INSPECT CRUISE CONTROL MAIN SWITCH |
(a) Remove the cruise control main switch (See page
.gif)
).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 - 3 |
+ (ACCEL)/RES (RESUME) |
235 to 245 Ω |
|
1 - 3 |
- (COAST)/SET |
617 to 643 Ω |
|
1 - 3 |
CANCEL |
1,509 to 1,571 Ω |
|
1 - 3 |
Main Switch OFF |
10 kΩ or higher |
|
1 - 3 |
Main Switch ON |
Below 1 Ω |
(c) Reinstall the cruise control main switch.
| NG | .gif) |
REPLACE CRUISE CONTROL MAIN SWITCH |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY) |
|
(a) Disconnect the spiral cable with sensor sub-assembly side and main switch side connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 (main switch side) - 3 (spiral cable with sensor sub-assembly side) |
Always |
Below 1 Ω |
|
3 (main switch side) - 4 (spiral cable with sensor sub-assembly side) |
Always |
Below 1 Ω |
|
*a |
Front view of wire harness connector (to Spiral Cable with Sensor Sub-assembly) |
|
*b |
Front view of wire harness connector (to Cruise Control Main Switch) |
(c) Reconnect the spiral cable with sensor sub-assembly side and main switch side connector.
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
NOTICE:
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 page shown in the brackets.
HINT:
- Removal (See page ).
- Installation (See page ).
(a) Remove the spiral cable with sensor sub-assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 (CCS) main switch side - S8-1 (CCS) |
The spiral cable with sensor sub-assembly position is center |
Below 1 Ω |
|
The spiral cable with sensor sub-assembly position is 2.5 rotations to the left |
||
|
The spiral cable with sensor sub-assembly position is 2.5 rotations to the right |
||
|
4 (ECC) main switch side - S8-2 (ECC) |
The spiral cable with sensor sub-assembly position is center |
Below 1 Ω |
|
The spiral cable with sensor sub-assembly position is 2.5 rotations to the left |
||
|
The spiral cable with sensor sub-assembly position is 2.5 rotations to the right |
|
*a |
Component without harness connected (Spiral Cable with Sensor Sub-assembly) |
|
*b |
Cruise Control Main Switch Side |
(c) Reinstall the spiral cable with sensor sub-assembly.
| NG | |
REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
|
|
4. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - ECM AND BODY GROUND) |
(a) Disconnect the E13 ECM connector.
(b) Disconnect the S8 spiral cable with sensor sub-assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S8-2 (ECC) - Body Ground |
Always |
Below 1 Ω |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E13-17 (CCS) - S8-1 (CCS) |
Always |
Below 1 Ω |
|
E13-17 (CCS) - Body ground |
Always |
10 kΩ or higher |
(d) Reconnect the ECM connector.
(e) Reconnect the spiral cable with sensor sub-assembly connector.
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Cruise Control Input Processor (P160700)
DESCRIPTION
When the ECM determines that there is a malfunction, the ECM illuminates the
MIL and stores a DTC.
HINT:
When these DTCs are stored, the ECM cuts the current supplied to the throttle ...
Cruise Main Indicator Light Circuit
DESCRIPTION
When the ECM detects a cruise control switch on signal from the cruise
control switch, the ECM sends the signal to the combination meter assembly
through CAN communication. ...
Other materials:
Lost Communication with ECM / PCM "A" (U0100,U0126,U0129,U0142)
DESCRIPTION
These DTCs are stored if there is a malfunction in the CAN communication system
connected to the blind spot monitor sensor.
HINT:
If CAN communication system DTCs are stored, they may also be stored for other
systems.
DTC Code
DTC Detection Condition
...
Removal
REMOVAL
PROCEDURE
1. REMOVE INSTRUMENT PANEL SUB-ASSEMBLY
(See page
)
2. REMOVE NO. 3 HEATER TO REGISTER DUCT
3. REMOVE INSTRUMENT PANEL WIRE ASSEMBLY
(a) Using a screwdriver with its tip wrapped in protective tape, release
the 3 airbag connector locks.
Text in Illustr ...
Four-wheel drive system
Use the front-wheel drive control switch to select the following transfer modes.
H2 (high speed position, two-wheel
drive)
Use this for normal driving on dry hard-surfaced roads.
This position gives greater economy, quietest ride and least wear.
H4 (high speed position, four-wheel
drive) ...
