Idle Speed Inspection - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes

Idle Speed Inspection

Caution
• Changing the TAS while attempting to adjust the idle speed could cause an engine malfunction.
Do not change the TAS adjustment position.
1. Complete the engine tune-up preparation.
2. Verify that the ignition timing is within the specification. (See
3. Verify that the idle speed is within the specification using the RPM DATA MONITOR function.
• If not within the specification, adjust the idle speed to within the specification by turning the AAS
after verifying that the ignition timing is within the specification.
Idle speed
ATX: 700-800 rpm
MTX: 640-740 rpm
4. Verify that the idle speed is within the specification when each load is applied. (The speed decrease
just after the load is applied is not considered.)
• If not within the specification with any of the specified loads applied, inspect the IAC valve.
• If not within the specification when a specified load is applied, inspect the related input parts,
wiring harnesses, and connectors.
Standard
Load status
No load
34-42 A
*1
Electrical loads on
Above 42 A 700-800
A/C on Low load
Downloaded from
Idle speed (rpm)
N, D position (ATX), Neutral position (MTX)
ATX
N range D range
700-800 650-750
700-800 650-750
670-770
*2
700-800 650-750
https://carmanualshub.com/
Ignition Timing Inspection.)
MTX
640-740
650-750
700-800
- automotive repair manuals website