DESCRIPTION
The main body ECU (driver side junction block assembly) controls the operation of the TAIL relay.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(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 / Main Body / Active Test.
(e) Check that the relay operates.
Main Body
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Taillight Relay |
Taillight relay |
ON/OFF |
- |
OK:
Taillight relay operates. (Taillights illuminate.)
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT TAILLIGHT RELAY (TAIL) |
(a) Remove the taillight relay from the main body ECU (driver side junction block assembly). |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3 - 5 |
Voltage is not applied between terminals 1 and 2 |
10 kΩ or higher |
Apply the battery voltage between terminals 1 and 2 |
Below 1 Ω |
|
3 - 4 |
Voltage is not applied between terminals 1 and 2 |
Below 1 Ω |
Apply the battery voltage between terminals 1 and 2 |
10 kΩ or higher |
NG | ![]() |
REPLACE TAILLIGHT RELAY |
|
3. |
CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 2A main body ECU (driver side junction block assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
2A-1 - Body ground |
Always |
11 to 14 V |
*1 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
OK | ![]() |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Navigation System
DTC Code
Detection Item
See page
B1532
LVDS Signal Malfunction (from Extension Module)
B1551
HD Radio Tuner ...
Terminals Of Ecu
TERMINALS OF ECU
HINT:
Check from the rear of the connector while it is connected to the components.
1. NAVIGATION RECEIVER ASSEMBLY
Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
...
Precaution
PRECAUTION
1. EXPRESSIONS OF IGNITION SWITCH
The type of ignition switch used on this model differs according to the specifications
of the vehicle.
The expressions listed in the table below are used in this section.
Expression
Switc ...