Toyota Tacoma (2015-2018) Service Manual: Entire Combination Meter does not Operate
DESCRIPTION
This circuit is the power source circuit for the meter. This circuit provides two types of power sources, one is a constant power source mainly used as a backup power source, and the other is an IG power source mainly used for signal transmission. The constant power source is mainly used as a backup power source for the meter CPU, however, it is also used for CAN communication. If a voltage of 12 V is not applied to terminal IG+ when turning the ignition switch ON, the indicators will not operate.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND) |
|
(a) Disconnect the combination meter assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
C9-20 (IG+) - Body ground |
Ignition switch ON |
11 to 14 V |
|
C9-19 (B) - Body ground |
Always |
11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C9-18 (ES) - Body ground |
Always |
Below 1 Ω |
|
*a |
Front view of wire harness connector (to Combination Meter Assembly) |
| OK | .gif) |
REPLACE COMBINATION METER ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lost Communication with ECM / PCM "A" (U0100,U0129,U0142,U0151,U0163,U023A,U1104)
DESCRIPTION
The combination meter communicates with the ECM, skid control ECU, power steering
ECU, main body ECU (multiplex network body ECU), airbag sensor assembly, navigation
receiver assembly ...
Speedometer Malfunction
DESCRIPTION
The meter CPU receives vehicle speed signals from the skid control ECU via the
CAN communication system (CAN V1 Bus). The speed sensor detects the wheel speed
and sends the appropriat ...
Other materials:
Ecm
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
Installation
INSTALLATION
PROCEDURE
1. INSTALL NO. 2 ECM BRACKET
(a) Install the No. 2 ECM bracket to the ECM with the 2 screws.
Torque:
3.2 N·m {33 kgf·cm, 28 in·lbf}
2. INSTALL ECM BRACKET
(a) Install the ECM bracket to the EC ...
Disposal
DISPOSAL
PROCEDURE
1. DISPOSE OF BRAKE BOOSTER ACCUMULATOR ASSEMBLY
(a) Place the brake booster accumulator in a vise and cover it with a cloth.
(b) Slowly cut a hole on the brake booster accumulator side in the A portion
shown in the illustration on the left. And discharge the gas and liqui ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK
(a) Connect the Techstream to the DLC3.
(1) Turn the ignition switch to ON.
NOTICE:
Do not start the engine.
(2) Turn the Techstream on.
(3) Enter the following menus: Powertrain / Engine / Active Test / C ...
