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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Test Z

PINPOINT TEST Z: THE SPEED DEPENDENT INTERVAL MODE DOES NOT OPERATE CORRECTLY

Test Z1-Z4:

Test Z5:

Normal Operation
Under normal operation the wiper motor receives input from the PCM through circuit 679 (GY/BK) with vehicle speed information. The wiper motor electronics then determine the speed of the wiper motor.

Possible Causes
- Open or short to ground in circuit 679 (GY/BK).
- Inoperative vehicle speed sensor (VSS).
- Inoperative wiper motor.