CIRCUIT DESCRIPTION. The vehicle speed sensor outputs a 4-pulse signal for every revolution of the transaxle output shaft. After this signal is converted into a ...
CIRCUIT DESCRIPTION The vehicle speed sensor outputs a 4-pulse signal for every revolution of the transaxle output shaft. After this signal is converted into a more precise rectangular wave form by the wave form shaping circuit inside the combination meter, it is then transmitted to the ECM.
4-Pulse
4-Pulse
Vehicle Speed Sensor
Combination Meter ECM
Transaxle D06036
DTC No.
P0500
DTC Detecting Condition
Trouble Area
No vehicle speed sensor signal to ECM under condition (1) and (2); (2-trip detection logic) 1. Park/neutral position switch is OFF 2. Vehicle is being driven Clutch or brake slips or gear is broken
Combination meter Open or short in vehicle speed sensor circuit Vehicle speed sensor ECM Automatic transaxle (clutch, brake or gear etc,)
WIRING DIAGRAM ECM
Combination Meter
Instrument Panel J/B 19 C14
V-W
6 1F
3 1H
V-W
9 E4 SPD
D07932
2002 ECHO (RM884U)
Author:
Date:
337
DI-168 DIAGNOSTICS
-
AUTOMATIC TRANSAXLE
INSPECTION PROCEDURE 1
Check operation of speedometer.
HINT: Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame records the engine conditions when the malfunction is detected. When troubleshooting it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction. CHECK: Drive the vehicle and check if the operation of the speedometer in the combination meter is normal. HINT: The vehicle speed sensor is operating normally if the speedometer display is normal. NG
Check speedometer (See page BE-2 ).
OK
2
Check for short in harness and connector between terminal SPD of ECM connector and body ground. PREPARATION: Disconnect the connector of the ECM. CHECK: Check continuity between terminal SPD of the ECM connector and body ground. OK: No continuity (1M Ω or higher)
SPD
D08010
NG
Repair or replace harness or connector.
OK
2002 ECHO (RM884U)
Author:
Date:
338
DI-169 DIAGNOSTICS
3
-
AUTOMATIC TRANSAXLE
Check voltage between terminal SPD of ECM connector and body ground. ON
PREPARATION: Turn ignition switch ON. CHECK: Measure voltage between terminal SPD of ECM connector and body ground. OK: Voltage: 10 - 14 V
SPD
(-)
(+)
D05680
NG
Check for open in harness and connector between instrument panel J/B and ECM (See page IN-29 ).
OK
4
5
Check for open in harness and connector between instrument panel J/B and combination meter (See page IN-29 ).
NG
Repair or replace harness or connector.
NG
Replace ECM.
Check ECM (See page IN-29 ).
OK
Check and repair transaxle (clutch, brake or gear etc,).
The No.1 vehicle speed sensor outputs a 4-pulse signal for every revolution of ... â¢Open or short in vehicle speed sensor circuit ... INSPECTION PROCEDURE.
Try to rotate the clutch pinion gear counter- clockwise and check that it locks. If necessary, replace the starter clutch. 13. INSPECT MAGNETIC SWITCH.
75.000 - 75.013 mm (2.95275 - 2.95326 in.) Maximum diameter: 75.013 mm (2.95326 in.) If the diameter is greater than maximum, replace the cylinder block. 6.
(a) Fasten the front seat belts. (b) Drive the car at 10 mph (16 km/h) and slam on the brakes. Check that the belt locks and cannot be extended at this time. HINT:.
Condition : Periodically cools and then fails to cool. AC-4. -. AIR CONDITIONING. AIR CONDITIONING SYSTEM. 1451. Author : Date : 2002 ECHO (RM884U). 2.
Shift solenoid valve ST is switched ON-OFF by a signal from ECM so that let in or out timing of 2nd brake is adjusted by operating orifice control valve. Therefore ...
flow ratio from âCURRENT DATAâ. Mass Air Flow Value (gm/sec.) Malfunction. 0.0. â¢Mass air flow meter power source circuit open. â¢VG circuit open or short.
The rotary solenoid type IAC valve is located on the throttle body and intake air bypassing the throttle valve is directed to the IAC valve through a passage.
CIRCUIT DESCRIPTION. The SRS is equipped with a voltage-increase circuit (DC-DC converter) in the airbag sensor assembly in case the source voltage ...
Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because ... CHECK: Measure voltage between terminals IGF of the ECM connector.
If under the lower level, replace the battery (or add distilled wa- ter if possible) and ... INSPECT DISCHARGE WARNING LIGHT CIRCUIT. (a) Turn the ignition ...
CIRCUIT DESCRIPTION. The P/T squib (LH) circuit consists of the airbag sensor assembly and seat belt pretensioner (LH). It causes the SRS to deploy when ...
(1) Unlock the front LH or RH door with a key. (2) Turn the ignition switch to IG or ON position. (3) Unlock the doors with the wireless door lock control system.
CIRCUIT DESCRIPTION. The key unlock warning switch goes ON when the ignition key is inserted in the key cylinder and goes OFF when the ignition key is ...
When all the component parts, wire harnesses and con- nectors of each circuit except the ECU are found to be normal in troubleshooting, then it is determined ...
