DESCRIPTION
DTC C1379 is cleared when the crawl control switch sends a crawl control operation signal or when test mode ends.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1379 |
Stored only during test mode. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (CRAWL CONTROL SWITCH) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
(f) Check the Data List for proper functioning of the crawl control switch.
ABS/VSC/TRAC
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Crawl Control Switch |
Crawl speed selector switch status/ LOW, MIDLOW, MID, MIDHIGH or HIGH |
Actual crawl speed selector switch position |
- |
OK:
The Techstream displays according to crawl control switch operation.
NG | ![]() |
GO TO STEP 3 |
|
2. |
CHECK TEST MODE DTC |
(a) Perform the crawl control switch check in the Test Mode Procedure (See page
).
OK:
Test mode DTC C1379 is cleared.
OK | ![]() |
USE SIMULATION METHOD TO CHECK |
NG | ![]() |
REPLACE MASTER CYLINDER SOLENOID |
3. |
INSPECT DRIVE MONITOR SWITCH |
(a) Remove the crawl control switch (drive monitor switch) (See page
).
(b) Inspect the crawl control switch (drive monitor switch) (See page
).
NG | ![]() |
REPLACE DRIVE MONITOR SWITCH |
|
4. |
INSPECT ROOF CONSOLE BOX ASSEMBLY |
(a) Remove the roof console box assembly.
*a |
Component without harness connected (Roof Console Box Assembly) |
- |
- |
(b) Measure the resistance according the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
R44-1 (SWI3) - 2 |
Always |
Below 1 Ω |
R44-3 (DN) - 7 |
Always |
Below 1 Ω |
R44-4 (ECU) - 6 |
Always |
Below 1 Ω |
R44-5 (UP) - 3 |
Always |
Below 1 Ω |
R44-12 (GND) - 5 |
Always |
Below 1 Ω |
Result |
Proceed to |
---|---|
OK |
A |
NG (for Double Cab) |
B |
NG (for Access Cab) |
C |
A | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (MASTER CYLINDER SOLENOID - ROOF CONSOLE BOX ASSEMBLY) |
B | ![]() |
REPLACE ROOF CONSOLE BOX ASSEMBLY |
C | ![]() |
REPLACE ROOF CONSOLE BOX ASSEMBLY |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the combination meter.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
2.
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT BRAKE CYLINDER AND PISTON
(a) Check the cylinder bore and piston for rust and scoring.
2. INSPECT PAD LINING THICKNESS
(a) Using a ruler, measure the pad lining thickness.
Standard thickness:
11.5 mm (0.453 in.)
Minimum thickness:
1.0 mm (0.0394 in.) ...
Freeze Frame Data
FREEZE FRAME DATA
1. FREEZE FRAME DATA
(a) When a DTC is stored, the 4 wheel drive control ECU stores the current vehicle
state as Freeze Frame Data.
HINT:
Freeze Frame Data at the time a DTC is stored:
When the 4 wheel drive control ECU stores data at the time a DTC is stored, no
updates w ...