Engine Control System (4HK1) 1A-73
Circuit/ System Testing DTC P0080
Step Action Value(s) Yes No
1
Did you perform the Diagnostic System Check
- Engine Controls?
—
Go to Step 2
Go to Diagnostic
System Check -
Engine Controls
2
1. Install a scan tool.
2. Perform the Exhaust Throttle Control with a
scan tool.
3. Command the solenoid valve ON and OFF.
Does the solenoid valve click with each
command?
—
Go to Diagnostic
Aids Go to Step 3
3
1. Turn OFF the ignition.
2. Remove the exhaust throttle solenoid valve.
3. Turn ON the ignition, with the engine OFF.
4. Monitor the DTC Information with a scan tool.
Is DTC P0079 set, but not DTC P0080?
—
Go to Step 5 Go to Step 4
4
1. Test the control circuit between the ECM (pin
102 of E-12) and the solenoid valve (pin 1 of
J-59) for a short to battery or ignition voltage.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 7 Go to Step 6
5
Replace the exhaust throttle solenoid valve.
Did you complete the replacement?
—
Go to Step 7
—
6
Important: Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
—
Go to Step 7
—
7
1. Reconnect all previously disconnected
harness connector(s).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Perform the Exhaust Throttle Control with a
scan tool.
5. Command the solenoid valve ON and OFF.
Does the exhaust throttle solenoid valve click
with each command?
—
Go to Step 8 Go to Step 3
8
Observe the DTC Information with a scan tool.
Are there any DTCs that you have not
diagnosed?
—
Go to DTC List System OK
LG4HKED-WE-0871.book 73 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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