TROUBLESHOOTING
NO.8 FAST IDLE/RUNS ON
8
Fast idle/runs on
DESCRIPTION
• Engine speed continues at fast idle after warm-up.
• Engine runs after ignition switch is turned off.
POSSIBLE
CAUSE
• Engine coolant temperature malfunction
• Air leakage from intake-air system
• Throttle body malfunction
Diagnostic procedure
STEP
INSPECTION
RESULTS
ACTION
1
Connect NGS tester to DLC.
Access ECT PID.
Start and warm up engine to normal operating
temperature.
Is ECT PID reading between 112”C (234 “ F) and
82°C (180‘ F) ?
Yes
Go to next step.
No
ECT PID is higher than 112°C (234°F) :
Go to symptom troubleshooting No.16 "Cooling
system concerns - Overheating”.
ECT PID is less than 82'C (180'F) :
Go to symptom troubleshooting No.17 “Cooling
system concerns - Runs cold”.
2
Connect NGS tester to DLC.
Turn ignition switch on.
Retrieve any DTC.
Is any DTC displayed?
Yes
DTC is displayed:
Go to appropriate DTC test.
No
No DTC is displayed:
Go to next step.
3
Is there air leakage felt or heard at intake-air
system components while racing engine to
higher speed?
Yes
Repair or replace parts as necessary.
No
Verify accelerator cable free play.
4
Verify test results. If okay, return to diagnostic index to service any additional symptoms.
NO.9 LOW IDLE/STALLS DURING DECELERATION
9
Low idle/stalls during deceleration
DESCRIPTION
• Engine stops unexpectedly at beginning of deceleration or recovery from deceleration.
POSSIBLE
CAUSE
• Vacuum leakage
• IAC valve malfunction
• Air leakage from intake-air system
• MAF sensor or related circuit malfunction
• TP sensor or related circuit malfunction
• Brake switch or related circuit malfunction
• Neutral/clutch switch or related circuit malfunction
Diagnostic Procedure
STEP
INSPECTION
RESULTS
ACTION
1
Does engine idle rough?
Yes
Go to symptom troubleshooting No.7 for “Engine
runs rough / Rolling idle”.
No
Go to next step.
2
Verify following:
• Proper routing and no damage of vacuum
lines
• IAC valve is connected properly.
• No air leakage from intake-air system
Are all items okay?
Yes
Go to next step.
No
Service as necessary.
Repeat Step 2.
3
Connect NGS tester to DLC.
Turn ignition switch on.
Retrieve any DTC.
Is any DTC displayed?
Yes
DTC is displayed:
Go to appropriate DTC test.
No
No DTC Is displayed:
Go to next step.
F1-120
Summary of Contents for 626 Station Wagon
Page 25: ...CONTROL SYSTEM WIRING DIAGRAM With Immobilizer System OUTLINE F1 4 ...
Page 183: ...CONTROL SYSTEM COMPONENT LOCATION F2 7 ...
Page 204: ...MANUAL TRANSAXLE FEATURES OUTLINE J 2 OUTLINE OF CONSTRUCTION J 2 SPECIFICATIONS J 2 D J 1 ...
Page 266: ...SHIFT MECHANISM 6 Apply grease to the cam as shown K2 59 ...
Page 418: ...TROUBLESHOOTING KEYLESS ENTRY SYSTEM ON BOARD DIAGNOSTIC FUNCTION S 37 ...
Page 454: ...WARNING AND INDICATOR SYSTEM O p e ra tin g O rd e r T 32 ...