Operation CHARM: Car repair manuals for everyone.
Home >> Honda >> 2008 >> CR-V 2WD L4-2.4L >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> System Diagnostic Mode >> Unit Check
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Unit Check

Unit Check

To start the test, select the item you want to check.
- Display
- Radio
- Navi ECU
- PC Card Info
- Hard Key






Display
This diagnostic does additional checks on the communication bus between the navi CPU and the display. In addition, the internal electronics and touch screen functionality are confirmed.

If the connection is NG, replace the navigation unit.
- Connection verifies internal communications.
- Version represents the software version for the display.






Radio
This diagnostic screen checks the internals of the radio (AM and FM) and CD player. If NG, replace the navigation unit.






Navi ECU
This screen looks for problems with the navigation unit. When you initiate this diagnostic, the navigation unit may delay up to a minute while the diagnostic runs.

- If V-RAM or D-RAM is NG, then replace the navigation unit.
- If GPS indicates NG (ANT), then check the entire GPS antenna wire from the navigation unit to the antenna. If the wire is crushed or damaged, try a known-good antenna. If this diagnostic reads OK, then order a new GPS antenna. If the diagnostic still reads NG (ANT), then replace the navigation unit.
- DVD ROM represents the database version on the DVD. You can also find this information in Setup by selecting System Information.
- Serial No. should be the same as the serial number found on the underside of the navigation unit. You needs this number to obtain the security code from the Interactive Network (iN) system.
- Mem Clear is for factory use, and should never be used unless instructed by the factory. Accidental selection will erase the customer's personal data, PINS, and settings. If selected, a popup box appears asking if you want to clear the memory. If so, select Yes.






PC Card info
There is no PC Card in the PC slot, and the screen should say, "PC Card is not inserted".






If the factory provides a PC card and instructs you to insert a card, then the screen displays the Manufacturer, and Product Name as shown in the following screen. Touch the FILES button to see the contents of the card.






Hard Key
This diagnostic screen checks the status of each of the hard buttons surrounding the navigation display. When you press each hard button, the corresponding item on the screen should flash blue. Touch the return key, or press and hold the joystick to exit.

NOTE: VOL/PWR knob operation (turn, push) and OPEN/CLOSE button operation are not displayed.




pro multis · About Operation CHARM