CHECK FOR INTERMITTENT PROBLEMS
CHECK FOR INTERMITTENT PROBLEMS
HINT:
A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ECUs can be detected using the Data List function of the Techstream.
(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) Follow the directions on the Techstream to display the Data List and select areas where momentary interruption should be monitored.
HINT:
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|---|
EFI Communication Open |
EFI communication open detection |
Error or Normal |
Error: Momentary interruption Normal: Normal |
- |
Yaw Rate Open |
Yaw rate sensor open detection |
Error or Normal |
Error: Momentary interruption Normal: Normal |
- |
Deceleration Open |
Acceleration sensor open detection |
Error or Normal |
Error: Momentary interruption Normal: Normal |
- |
Steering Open |
Steering angle sensor open detection |
Error or Normal |
Error: Momentary interruption Normal: Normal |
- |
IG Voltage Value Decreased |
+BS voltage value decrease detection |
Error or Normal |
Error: Voltage low Normal: Normal |
- |
IG Voltage Value Increased |
+BS voltage value increase detection |
Error or Normal |
Error: Voltage high Normal: Normal |
- |
(f) While observing the screen, gently jiggle the connector or wire harness between the ECU and sensors, or between ECUs.
OK:
Normal is displayed.
HINT:
If the display changes, this indicates that there has been a momentary interruption (open circuit) in the connector and/or wire harness. In this case, repair or replace the connectors and/or wire harnesses as one of them is faulty.
Toyota CH-R Service Manual > Power Steering System: Dtc Check / Clear
DTC CHECK / CLEAR
CHECK DTCs (USING TECHSTREAM)
(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 / EMPS / Trouble Codes.
Chassis > EMPS > Trouble Codes
(f) Ch ...
Toyota CH-R Service Manual > Theft Deterrent System: Security Horn Circuit
DESCRIPTION
When the theft deterrent system is switched from the armed state to the alarm
sounding state, the main body ECU (multiplex network body ECU) transmits a signal
to cause the security horn assembly to sound at intervals of 0.4 seconds.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NO ...