Honda CR-V: Sleep and Wake-up Mode Test

1. Shift to the sleep mode: Turn the ignition switch OFF, and remove the key. If the MICU receives no signals from the inputs listed below, it will go into sleep mode in less than 40 seconds.

2. Confirm the sleep mode: Check for voltage on the B-CAN communication line; there should be battery voltage in the sleep mode. Check the parasitic draw at the battery while shifting into the sleep mode; amperage should change from about 200 mA to less than 35 mA.

3. Shift to the wake up mode: When the ignition switch is turned ON (II), the MICU, gauge control module, immobilizer-keyless control unit-receiver, and PCM wake up at the same time without "talking" to each other through the communication lines.

When any switch in the multiplex integrated control system is turned on, it wakes up its related control unit which, in turn, wakes up the other units. After confirming the sleep mode, look in the following table for the switch most related to the problem. Operate that switch and see if its control unit wakes up.

NOTE: If any control unit is faulty and will not wake up, several circuits in the system will malfunction at the same time. The MICU is followed by a list of the switches and input signals that can wake it up.

Circuit Diagram

Honda CR-V. Circuit Diagram

READ NEXT:

 DTC Troubleshooting

DTC B1000: Communication Bus Line Error (Bus-off) 1. Clear the DTCs with the HDS. 2. Turn the ignition switch OFF, and then back ON (II). 3. Wait for 6 seconds or more. 4. Check for DTCs with the H

 MICU Input Test

NOTE: Before testing, troubleshoot the B-CAN System Diagnosis Test Mode A. 1. Turn the ignition switch OFF. 2. Disconnect the under-dash fuse/relay box connectors E, F, G, K, R, and T. NOTE: All con

 Keyless/Power Door Locks/Security System

Component Location Index NAVIGATION UNIT or AUDIO UNIT IMMOBILIZER-KEYLESS CONTROL UNIT (Built-in receiver) MICU (Built into the under-dash fuse/relay box) HEADLIGHTS HORN HOOD SWITCH SECUR

SEE MORE:

 Brake Booster

Brake Booster Test Functional Test 1. With the engine stopped, press the brake pedal several times to deplete the vacuum reservoir, then press the brake pedal hard, and hold it for 15 seconds. If the brake pedal sinks, either the master cylinder is bypassing internally, or the brake system is lea

 Cleaning the Seat Belts

Dirt build-up in the loops of the seat belt anchors can cause the belts to retract slowly. Wipe the insides of the loops with a clean cloth dampened in mild soap and warm water or isopropyl alcohol. If your seat belts get dirty, use a soft brush with a mixture of mild soap and warm

© 2016-2023 Copyright www.hcrv.net