Toyota Tacoma 2015-2018 Service Manual: ECU Malfunction (B1003)
DESCRIPTION
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B1003 |
A malfunction in the non-volatile storage of the central gateway ECU (network gateway ECU) is detected. |
Central gateway ECU (network gateway ECU) |
PROCEDURE
|
1. |
CHECK DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Central Gateway / Trouble Codes.
OK:
DTC B1003 is not output.
| OK | .gif) |
USE SIMULATION METHOD TO CHECK |
| NG | |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
Fail-safe Chart
FAIL-SAFE CHART
1. FAIL-SAFE FUNCTION
(a) When communication fails in any of the CAN bus lines (communication lines),
a fail-safe function(s) will operate. The fail-safe function that is specified ...
Clearance Warning ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Clearance Warning ECU Communication Stop Mode
Either Condition is met:
Commu ...
Other materials:
Inspection
INSPECTION
PROCEDURE
1. INSPECT REAR AXLE SHAFT
(a) Using a dial indicator, measure the runout of the shaft and flange.
Maximum runout:
Shaft runout: 1.5 mm (0.0591 in.)
Flange runout: 0.05 mm (0.0020 in.)
If the rear axle shaft or flange is damaged or worn, or the runout is greater
than ...
Pattern Select Switch Power Mode Circuit
DESCRIPTION
The ECM memory contains the programs for the normal and PWR shift patterns.
By following the programs corresponding to the signals from the pattern select
switch assembly, park/neutral position switch and other various sensors, the ECM
switches the shift solenoid valves on and off, ...
Low Pitched Horn
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT LOW PITCHED HORN ASSEMBLY
(a) Check the operation.
(1) Apply battery voltage to the terminal 1 and body ground, and check
that the low pitched horn assembly sounds.
Text in Illustration
...