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:

 DTC Troubleshooting

DTC B1078: Daytime Running Lights Signal Error (Canada) DTC B1079: Daytime Running Lights Signal Error (USA) NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. 1. Turn the ignition switch ON (II). 2. Pull the parking brake lever

 System Description

The air conditioning system removes heat from the passenger compartment by transferring heat from the ambient air to the evaporator. The evaporator cools the air with the refrigerant that is circulating through the evaporator. The refrigerant expands in the evaporator, and the evaporator becomes v

© 2016-2025 Copyright www.hcrv.net