Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [ENGINE CONTROL KL]
Pressure Regulator Control Inspection
Warning
•
Fuel line spills and leaks are dangerous.
Fuel can ignite and cause serious injuries
or death and damage. Fuel can also irritate
skin and eyes. To prevent this, always
complete the “BEFORE REPAIR
PROCEDURE” and “AFTER REPAIR
PROCEDURE” (Refer to 0 1 -1 4 BEFORE
REPAIR PROCEDURE, 01-14 AFTER
REPAIR PROCEDURE).
1. Install the fuel pressure gauge.
2. Measure the fuel pressure under the following
conditions:
Specifications
Fuel pressure (kPa {kgf/cm2, psi»
Idling
210— 260
{2.1— 2.6,
30— 37}
210— 260
{2.1— 2.6,
30— 37}
260— 310
{2.6— 3.2,
37—46}
During 120
sec. of hot
start 260— 310
{2.6— 3.2,
37— 46}
After 120 sec.
of hot start
210— 260
{2.1— 2.6,
37— 46}
210— 260
{2.1— 2.6,
30— 37}
260— 310
{2.6— 3.2,
37— 46}
Pressure
regulator
control
condition
Normal
Not normal
(Perform
Inspection 1)
Not normal
(Perform
Inspection 2)
3. If the fuel pressure is not within the specification,
c a rry o u t e ith e r In s p e c tio n 1 o r In s p e c tio n 2 as
required.
Inspection 1
1. Connect the SSTs (NGS tester) to the DLC.
2.
Access the following PIDs.
•
ECTPID. (Refer to
0 1 - 4 0 B
ENGINE
COOLANT TEMPERATURE SENSOR
INSPECTION [KL])
•
IAT PID. (Refer to
0 1 -4 0 B
INTAKE AIR
TEMPERATURE SENSOR INSPECTION
[KL])
•
TP
V
PID. (Refer to
0 1 -4 0 B
THROTTLE
POSITION SENSOR INSPECTION [KL])
3. Check PID value.
4.
If okay, check:
• Pressure regulator.
• PRC solenoid valve.
• Wiring between PRC solenoid valve and PCM
terminal
19
(Open circuit).
• Wiring between main relay and PRC solenoid
valve (open circuit).
inspection 2
1.
Connect the
SSTs
(NGS tester) to the DLC.
2. Access the following PIDs.
• ECTPID. (Refer to 01-40B ENGINE
COOLANT TEMPERATURE SENSOR
INSPECTION [KL])
• IAT PID. (Refer to 01-40B INTAKE AIR
TEMPERATURE SENSOR INSPECTION
[KL])
3. Check PID value.
4. If okay, check:
• Loose or damaged vacuum hose between the
pressure regulator, PRC solenoid valve, and
intake manifold.
• PRC solenoid valve.
• Wiring between PRC solenoid valve and PCM
terminal 19 (short circuit).
0 1 -0 1 B -1 79