Lexus ES: Cruise Control System Internal Failure (P057504,P057549)
DESCRIPTION
When the ECM detects an internal malfunction, DTC P057504 or P057549 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from |
|---|---|---|---|---|---|
| P057504 | Cruise Control System Internal Failure | When the dynamic radar cruise control system is operating, the ECM detects a malfunction in the internal cancel circuit for 0.4 seconds or more. | ECM | Does not come on | Engine |
| P057549 | Cruise Control Internal Electronic Failure | When the dynamic radar cruise control system is operating, the ECM detects a malfunction in the internal STP signal circuit for 0.2 seconds or more. | ECM | Does not come on | Engine |
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the ECM, refer to Registration.
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PROCEDURE
| 1. | CHECK FOR DTCs |
(a) Clear the DTCs.
Powertrain > Radar Cruise1 > Clear DTCs(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Powertrain > Radar Cruise1 > Trouble Codes| Result | Proceed to |
|---|---|
| DTC P057504 and P057549 are not output. | A |
| DTC P057504 or P057549 is output. | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE ECM |
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Brake System (P157800)
DESCRIPTION When a malfunction in the electronically controlled brake system is detected, DTC P157800 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output
Cruise Control Input Processor (P160700)
DESCRIPTION When the ECM detects that it is not functioning normally, DTC P160700 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from P160700
Cruise Control Input Processor (P160700)
DESCRIPTION When the ECM detects that it is not functioning normally, DTC P160700 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from P160700
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Installation
INSTALLATION PROCEDURE 1. INSTALL RADIO SETTING CONDENSER (a) Engage the claw to install a new terminal cover to the wire harness. NOTICE:
Make sure to hold the crimped side of the terminal when installing the wire harness to the terminal cover.
Make sure not to bend the exposed wire when
Components
COMPONENTS ILLUSTRATION *A Type A - - *1 EXHAUST MANIFOLD (TWC: Front Catalyst) *2 NO. 1 EXHAUST MANIFOLD HEAT INSULATOR *3 MANIFOLD STAY *4 EXHAUST MANIFOLD TO HEAD GASKET N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part ILLUSTRATION *A
