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:
Lost Communication with Meter (B1324)
DESCRIPTION
This DTC is stored when a communication error occurs between the radio and display
receiver assembly and combination meter assembly.
DTC No.
DTC Detection Condition
Trouble Area
B1324
After the radio and display receiver as ...
Components
COMPONENTS
ILLUSTRATION
HINT:
The following specifications are for BD22A (w/o Differential Lock). BD22A differentials
are equipped with M10 rear differential carrier to rear axel housing fasteners.
ILLUSTRATION
ILLUSTRATION
...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Navigation System
DTC Code
Detection Item
See page
B1324
Lost Communication with Meter
B1532
LVDS Signal Malfunction (from Extension Module)
...
