Toyota Camry owners & service manuals

Toyota Camry (XV70): Check For Intermittent Problems

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) Enter the following menus: Chassis / Brake/EPB / Data List.

(f) Check the data related to power supply fluctuations.

HINT:

A momentary interruption (open circuit) cannot be detected for 3 seconds after the ignition switch is turned to ON (initial check).

Chassis > Brake > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

EFI Communication Open

EFI communication open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

Related DTC: U010087

Yaw Rate Open

Yaw rate sensor (airbag sensor assembly) open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

Related DTC: U012587

Deceleration Open

Acceleration sensor (airbag sensor assembly) open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

Related DTC: U012587

Steering Open

Steering angle sensor open detection

Normal / Under intermittent

Normal: Normal

Under intermittent: Momentary interruption

Related DTC: U012687

(g) Push the line graph button to display the line graph.

(h) Check for intermittent shorts, etc.

OK:

Normal is displayed.

HINT:

If "Under intermittent" remains displayed on the Techstream, measure the resistance between the skid control ECU (brake actuator assembly) and the each sensor or ECM.

(i) While observing the screen, gently jiggle the connector or wire harness between the ECU and each sensors, or between ECUs.

OK:

Normal is displayed.

HINT:

  • If a momentary interruption occurs and Under intermittent is displayed on the Techstream, Under intermittent will remain displayed on the Techstream for 1 second after the circuit returns to normal.
  • 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.

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