Contents: Component Locations ⇊ Self-diagnosis function ⇊ Table of input/output signals of…⇊ Electrical diagram ⇊ Checking input signals ⇊
Component Locations
The MPCS system consists of two units (driver side and front passenger side) that improve the operation of each previously used unified unit (window lift control units, outside rearview mirrors, door locking and remote door lock control units).
In addition, all units are connected to each other by communication lines, the system has a self-diagnostic function, which simplifies its maintenance.
Self-diagnosis function
Mode 1
Self-diagnosis of each unit (driver side and front passenger side) and communication lines between units is carried out using fault codes (DTC).
Approximately 1 second after entering diagnostic mode 1, the fault code is displayed, and then after approximately 3 seconds, the next fault code is displayed.
Switching to mode 2 is done by opening the diagnostic connector for 5-10 seconds and then closing it again.
If no fault codes are output, check for continuity between diagnostic connector terminal 1 and ground, and between diagnostic connector terminal 3 and driver's side fuse box terminal A15.
Error codes
Below are the fault codes corresponding to the number of times the ignition key illumination is activated and the buzzer sound.
Mode 2
By activating each block (switches, sensors, etc.), the serviceability of these circuits is determined by the operation of the ignition switch backlight and the sound of the buzzer.
(The test can be performed in the same way using input signals. For testing individual switches, sensors, etc., see the description of the corresponding systems.)
In mode 1, open the diagnostic connector for 5-10 seconds, and then close it again, then the system will enter self-diagnosis mode 2. (The buzzer and ignition switch light will work during the transition to mode 2, as shown in the figure).
To exit this mode, you must open the diagnostic connector for 10 seconds or more or turn the ignition key to the OFF position.
If the components listed in the table are in good working order, the ignition switch backlight and buzzer will sound once.
- If there is a fault somewhere in the circuit, the backlight will not light.
- If the backlight does not light, see the description of the corresponding system check.
Table of input/output signals of components
Electrical diagram
Checking input signals
Driver side MPCS unit
If there are components of the additional passive safety system nearby, during the work see chapter Supplemental Restraint System (SRS).
1. Remove the side cover from the instrument panel side and the right side trim of the hood.
2. Remove the bolt and the driver's side fuse box.
3. Disconnect the 22-pin connector from the unit.
4. Remove the block from the fuse box.
5. Check the input signals from each system. If all signals are normal and the system does not work, replace the driver's side MPCS unit.
MPCS unit front passenger side
1. Remove the glove box (see chapter Body).
2. Remove the bolt and fuse box from the front passenger side.
3. Disconnect the 22-pin connector from the unit.
4. Remove the block from the fuse box.
5. Check the input signals from each system. If all signals are normal and the system does not work, replace the front passenger MPCS unit.
Checking input signals
MPCS
Forgotten Key Ignition Reminder System
Lighting fixtures left on reminder system
Reverse alert system
Ignition key lock system
Automatic transmission selector lever locking system
Folding system for exterior rearview mirrors
Locking doors
Interior lighting control system
Speed-dependent intermittent wiper control system
Refer to the original source on the website: hondabook