If there are no DTCs output but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
NOTICE: When replacing the brake actuator assembly, sensor, etc., turn the ignition switch off.
HINT: Inspect the fuse and relay before investigating the suspected areas as shown in the table below. Inspect each malfunction circuit in numerical order for the corresponding symptom.
Anti-lock brake system:

Terminals of ecu

Test mode procedure
Diagnosis systemInstallation
1. INSTALL RADIO NO. 2 BRACKET
Install radio No. 2 bracket with the 4 screws.
2. INSTALL RADIO NO. 1 BRACKET
Install radio No. 1 bracket with the 4 screws.
3. INSTALL RADIO RECEIVER
Connect the connector.
Install the radio receiver with the 4 scr ...
Definition of terms
Terms
Definitions
Monitor Description
Description of what ECM monitors and how to detect malfunctions
(monitoring purpose and details).
Related DTCs
A group of diagnostic trouble codes that are output by ECM based on
the same malfunction detection lo ...
Installation
1. INSTALL BRAKE VACUUM CHECK VALVE
ASSEMBLY
(a) Install the brake vacuum check valve assembly and
check valve grommet to the brake booster
assembly.
2. INSTALL BRAKE BOOSTER GASKET
(a) Install a new brake booster gasket to the brake
booster with master cylinder.
3. INSTALL BRAKE MASTER CYLI ...