DESCRIPTION
If the dimmer switch is turned to TAIL, HEAD or AUTO, the main body ECU sends a TAIL relay signal, panel light illumination signal, panel relay signal and TAIL cancel OFF signal to the combination meter. Then the meter and accessory meter become dim.
HINT:
w/ TAIL Cancel Switch:
When the headlights are illuminated and the TAIL cancel switch is turned on, the meter does not dim.
WIRING DIAGRAM
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
CAN communication system DTC is not output |
A |
CAN communication system DTC is output |
B |
B |
Go to CAN COMMUNICATION SYSTEM |
|
2. |
READ VALUE USING TECHSTREAM (LIGHT CONTROL RHEOSTAT) |
(a) Operate the Techstream according to the display and select the Data List (See page ).
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Tail Cancel SW* |
TAIL cancel switch condition/ON or OFF |
on: TAIL cancel switch on off: TAIL cancel switch off |
- |
Rheostat value |
Light control rheostat switch input/Min.: 0, Max.: 100 |
Light control rheostat switch is fully turned downward (0) → fully turned upward (100) |
Unit: % |
OK:
Light brightness can be changed within specified range by manual operation.
OK |
REPLACE COMBINATION METER ASSEMBLY |
|
3. |
INSPECT LIGHT CONTROL RHEOSTAT |
w/o TAIL Cancel Switch:
(a) Inspect the light control rheostat.
(1) Remove the light control rheostat (See page ).
(2) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
7 (T) - 1 (E) |
Always |
8 to 12 kΩ |
3 (RV) - 1 (E) |
Light control rheostat fully turned upward → fully turned downward |
8 to 12 kΩ → Below 50 Ω |
w/ TAIL Cancel Switch:
(b) Inspect the light control rheostat.
(1) Remove the light control rheostat (See page ).
(2) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
7 (T) - 5 (TC) |
TAIL cancel switch off → on |
1 MΩ or higher → Below 1 Ω |
7 (T) - 1 (E) |
Always |
8 to 12 kΩ |
3 (RV) - 1 (E) |
Light control rheostat fully turned upward → fully turned downward |
8 to 12 kΩ → Below 50 Ω |
NG |
REPLACE LIGHT CONTROL RHEOSTAT |
|
4. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER - LIGHT CONTROL RHEOSTAT) |
(a) Disconnect the F14 meter connector.
(b) Disconnect the F5 rheostat connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F14-37 (RHIG) - F5-7 (T) |
Always |
Below 1 Ω |
F14-38 (TR) - F5-3 (RV) |
||
F14-39 (E2) - F5-1 (E) |
||
F14-36 (TC) - F5-5 (TC)* |
OK |
REPLACE COMBINATION METER ASSEMBLY |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
ECM Communication Circuit Malfunction (C1203)
DESCRIPTION
The circuit is used to send control information from the skid control ECU to
the ECM, and engine control information from the ECM to the skid control ECU via
the CAN communication system.
DTC Code
DTC Detection Condition ...
Menu list of the hands-free phone system
Normal operation
Using a short cut key
Automatic volume adjustment
When vehicle speed reaches 50 mph (80 km/h) or more, the volume automatically
increases. The volume returns to the previous volume setting when vehicle speed
drops to 43 mph (70 k ...