1A-25 Engine General Information and Diagnosis:
Diagnostic Information and Procedures
Engine and Emission Control System Check
S5JB0A1104001
Refer to the following items for the details of each step.
Information sensors
Control devices
Others
1. MAF and IAT sensor
a: Fuel injector
A: ECM
2. Electric throttle body assembly (built-in
throttle position sensor and throttle
actuator)
b: EVAP canister purge valve
B: Combination meter
3. Stop lamp switch
c: Fuel pump relay
C: EVAP canister
4. ECT sensor
d: EGR valve
D: A/C evaporator outlet air temp. sensor (if equipped
with A/C)
5. A/F sensor
e: Malfunction indicator lamp
E: Data link connector
6. Heated oxygen sensor-2
f: Radiator cooling fan relay No.1
F: A/C compressor relay (if equipped)
7. Battery
g: HO2S heater relay
G: ABS hydraulic unit / control module assembly
8. CMP sensor
h: Ignition coil assembly (with ignitor)
H: BCM
9. MAP sensor
i: Main relay
I: Immobilizer coil antenna (if equipped)
10. CKP sensor
j: Oil control valve
J: Fuse box No.2
11. Main fuel level sensor
k: Radiator cooling fan relay No.2
K: A/C refrigerant pressure sensor (if equipped with A/
C)
11-1. Sub fuel level sensor
l: Radiator cooling fan relay No.3
12. Knock sensor
m: Starting motor control relay
13. Power steering pump pressure switch
n: Immobilizer indicator lamp (if equipped)
14. Accelerator pedal position (APP)
sensor
o: Throttle actuator control relay
15. Rear wheel speed sensor (RH, LH)
(VSS)
Step
Action
Yes
No
1
)
Customer complaint analysis
1) Perform customer complaint analysis referring to
“Customer Complaint Analysis”.
Was customer complaint analysis performed?
Go to Step 2.
Perform customer
complaint analysis.
2
)
DTC / Freeze frame data check, record and clearance
1) Check for DTC (including pending DTC) referring to
“DTC / Freeze Frame Data Check, Record and
Clearance”.
Is there any DTC(s)?
Print DTC and freeze
frame data or write them
down and clear them by
referring to “DTC
Clearance: ”, and go to
Step 3.
Go to Step 4.
3
)
Visual inspection
1) Perform visual inspection referring to “Visual Inspection”.
Is there any faulty condition?
Repair or replace
malfunction part, and go
to Step 11.
Go to Step 5.
4
)
Visual inspection
1) Perform visual inspection referring to “Visual Inspection”.
Is there any faulty condition?
Repair or replace
malfunction part, and go
to Step 11.
Go to Step 8.
5
)
Trouble symptom confirmation
1) Confirm trouble symptom referring to “Trouble Symptom
Confirmation”.
Is trouble symptom identified?
Go to Step 6.
Go to Step 7.
6
)
Rechecking and record of DTC / Freeze frame data
1) Recheck for DTC and freeze frame data referring to
“DTC Check: ”.
Is there any DTC(s)?
Go to Step 9.
Go to Step 8.
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