DESCRIPTION
Vehicles, which are equipped with ABS (Anti-lock Brake System), detect the vehicle speed using the skid control ECU (brake actuator assembly) and speed sensors. Each speed sensor monitors the wheel rotation speed and sends a signal to the skid control ECU. The skid control ECU converts the wheel speed signals into a 4-pulse signal and transmits it to the ECM via the combination meter assembly. The ECM determines the vehicle speed based on the frequency of the pulse signal.
HINT:
DTC Code |
DTC Detection Condition |
Trouble Area |
SAE |
---|---|---|---|
P050031 |
While vehicle being driven, no vehicle speed sensor signal transmitted to ECM (2 trip detection logic). |
|
P0500 |
MONITOR DESCRIPTION
If there is no speed signal from the combination meter assembly even though the ECM determines that the vehicle is being driven, the ECM interprets this as a malfunction in the speed signal circuit. The ECM then stores this DTC.
WIRING DIAGRAM
Refer to Speed Signal Circuit (See page ).
CAUTION / NOTICE / HINT
HINT:
After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (VEHICLE SPEED) |
(a) Drive the vehicle and check whether the operation of the speedometer in the combination meter assembly is normal.
HINT:
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine / Data List / Vehicle Speed.
Engine
Techstream Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Vehicle Speed |
Vehicle speed Min.: 0 km/h (0 mph) Max.: 255 km/h (158 mph) |
Actual vehicle speed |
|
(f) Drive the vehicle.
(g) According to the display on the Techstream, read the Data List.
OK:
The values displayed on the Techstream and speedometer are equal.
NG | ![]() |
GO TO STEP 3 |
|
2. |
CHECK DTC OUTPUT (DTC P050031) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Transmission / Trouble Codes.
(e) Read the DTCs.
Result
Result |
Proceed to |
---|---|
DTCs are not output |
A |
DTC P050031 is output |
B |
A | ![]() |
CHECK FOR INTERMITTENT PROBLEMS |
B | ![]() |
REPLACE ECM |
3. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) |
(a) Disconnect the C9 combination meter assembly connector.
(b) Disconnect the E13 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C9-40 (+S) - E13-24 (SPD) |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK METER / GAUGE SYSTEM |
(a) Proceed to Speed Signal Circuit in Meter / Gauge System (See page
).
|
5. |
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Start the engine.
(g) Turn the Techstream on.
(h) Drive the vehicle for 6 seconds or more.
(i) Enter the following menus: Powertrain / Transmission / Trouble Codes.
(j) Read the DTCs.
HINT:
If no DTCs (no pending DTCs) are output, the repair has been successfully completed.
NEXT | ![]() |
END |
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE REAR AXLE SHAFT SNAP RING
(a) Using a snap ring expander, remove the snap ring.
2. REMOVE REAR AXLE SHAFT
(a) Using SST and press, remove the rear axle shaft.
SST: 09521-25011
SST: 09521-25021
3. REMOVE REAR AXLE BEARING RETAINER INNER
(a) Remove the rear ...
Customize Parameters
CUSTOMIZE PARAMETERS
1. CUSTOMIZE METER / GAUGE SYSTEM
(a) Customizing with the Techstream
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Turn the Techstream on.
(4) Enter the following menus: Customize Setting / Warning or Display.
(5) Select the setting by r ...
Clutch Switch Circuit
DESCRIPTION
Clutch switch circuit inspection is necessary for manual transmission vehicles.
When the clutch pedal is released, the ECM receives the positive (+) battery
voltage through the ECU-IG NO. 2 fuse and ignition switch. While the clutch pedal
is depressed, the clutch switch assembly se ...