Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 639

Toyota Avalon V6-3.5L (2GR-FE) Manufacturer Code Page 639

OK:

Waveform appears as shown in the illustration.

HINT

Waveform varies with the blower level.

Result:

B -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

A -- REPLACE AIR CONDITIONING AMPLIFIER

Engine Control System Malfunction - Vehicle Stability Control System (to 12/2010)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1201/51: Engine Control System Malfunction

C1201/51 - Engine Control System Malfunction

DESCRIPTION

If a malfunction in the engine control system is detected, the operations of VSC and TRAC are prohibited by the fail-safe function. When the signals

from the engine are input normally, the fail-safe is cancelled and the DTC is not stored.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)

(a) Using the Techstream, check for any momentary interruption in the wire harness and connector corresponding to a DTC See: Brakes

and Traction Control/Antilock Brakes / Traction Control Systems/Testing and Inspection/Component Tests and General

Diagnostics/Check For Intermittent Problems.

ABS/VSC/TRAC

OK:

There are no momentary interruptions.

HINT

Perform the above inspection before removing the sensor and connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM TO SKID CONTROL ECU)

OK -- Continue to next step.