LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Toyota
>>
2017
>>
4Runner TRD Pro
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System - Diagnostic Codes (P0136-P0412)
>>
SFI System
>>
DTC P0412: Secondary Air Injection System Switching Valve "A" Circuit [08/2015 - 08/2019]
>>
Component Operating Range
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Component Operating Range
Diagnostic signal duty ratio from air injection control driver
70 to 90% when secondary air injection system operating.
0% when secondary air injection system not operating.