Combination Meter ASSY

Fig 1: Terminals Of ECU - Combination Meter Assy (1 Of 4)

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Fig 2: Terminals Of ECU - Combination Meter Assy (2 Of 4)

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Fig 3: Terminals Of ECU - Combination Meter Assy (3 Of 4)

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Fig 4: Terminals Of ECU - Combination Meter Assy (4 Of 4)

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Wave form 1 (Reference):

WAVE FORM 1 (REFERENCE)

Item	Condition
Tool setting	5 V/DIV, 20 ms/DIV
Vehicle condition	Driving at approx. 20 km/h (12 mph)

HINT:

As vehicle speed increases, the cycle of the signal wave form narrows.

Fig 5: Identifying Wave Form 1 Graph

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Wave form 2 (Reference):

WAVE FORM 2 (REFERENCE)

Item	Condition
Tool setting	5 V/DIV, 10 ms/DIV
Vehicle condition	Engine idle speed

Fig 6: Identifying Wave Form 2 Graph

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Wave form 3 (Reference):

WAVE FORM 3 (REFERENCE)

Item	Condition
Tool setting	2 V/DIV, 1 ms/DIV
Vehicle condition	Ignition switch ON

HINT:

Duty ratio changes as illumination becomes darker ("A" becomes longer).

Fig 7: Identifying Wave Form 3 Graph

Wave form 4 (Reference):

WAVE FORM 4 (REFERENCE)

Item	Condition
Tool setting	5 V/DIV, 100 ms/DIV
Vehicle condition	Ignition switch ON

Fig 8: Identifying Wave Form 4 Graph

Wave form 5 (Reference):

WAVE FORM 5 (REFERENCE)

Item	Condition
Tool setting	5 V/DIV, 100 ms/DIV
Vehicle condition	Ignition switch ON

Fig 9: Identifying Wave Form 5 Graph