Lexus ES: Engine Circuit Malfunction (C1280)
Lexus ES (XZ10) Service Manual / Drivetrain / Gf1a (transfer / 4wd / Awd) / Dynamic Torque Control Awd System / Engine Circuit Malfunction (C1280)
DESCRIPTION
If a malfunction in the ECM circuit occurs, the 4WD ECU assembly will output this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1280 | Engine Circuit Malfunction | When the following continues for 5 seconds or more:
|
|
PROCEDURE
| 1. | CHECK FOR DTC (ENGINE CONTROL SYSTEM) |
(a) Check if the engine control system DTC is output.
Powertrain > Engine > Trouble Codes| Result | Proceed to |
|---|---|
| Engine control system DTC is not output | A |
| Engine control system DTC is output | B |
| A | .gif) | REPLACE 4WD ECU ASSEMBLY |
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| B | | GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) |
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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
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ADJUSTMENT CAUTION / NOTICE / HINT *a Centering Bolt *b Standard Bolt HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
Centering bolts are used to install the door hinges to the vehicle body and door. The door cannot be adjus
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