Operation CHARM: Car repair manuals for everyone.
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

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Preliminary Inspection

Before you start testing, perform the following preliminary checks. Be sure to write down your findings, especially any DTCs, for future reference.
1. Know and understand the customer's concern.
2. Verify that TR sensor is properly adjusted in NEUTRAL.
3. Verify customer concern (e.g. when does it occur?):
^ Upshift
^ Downshift
^ Coasting
^ Engagement

If concern involves noise or vibration, does it relate to any of the following:
^ rpm
^ Vehicle speed
^ Shift
^ Gear
^ Range
^ Temperature

4. Vehicle must be at normal operating temperature.
5. Check transaxle fluid level and condition.
6. Check for the following items:
^ Vehicle modifications
^ Electronic add-on items
^ Leaks
^ Proper linkage adjustments

7. Check TSBs for related information.
8. Perform complete On-Board Diagnostics (OBD) for both KOEO and KOER.
9. Record all DTCs.
10. Repair all non-transaxle DTCs.