Engine Control System (4HK1) 1A-227
5
1. Leave the DMM connected to the EGR valve
harness connector.
2. Turn OFF the ignition.
3. Disconnect the fuel rail pressure (FRP) sensor
harness connector.
4. Turn ON the ignition, with the engine OFF.
Does the DMM voltage change to more than
the specified value?
4.5volts
Go to Step 12 Go to Step 6
6
1. Leave the DMM connected to the EGR valve
harness connector.
2. Turn OFF the ignition.
3. Disconnect the camshaft position (CMP)
sensor harness connector.
4. Turn ON the ignition, with the engine OFF.
Does the DMM voltage change to more than
the specified value?
4.5volts
Go to Step 13 Go to Step 7
7
1. Leave the DMM connected to the EGR valve
harness connector.
2. Turn OFF the ignition.
3. Disconnect the barometric pressure (BARO)
sensor harness connector.
4. Turn ON the ignition, with the engine OFF.
Does the DMM voltage change to more than
the specified value?
4.5 volts
Go to Step 14 Go to Step 8
8
1. Leave the DMM connected to the EGR valve
harness connector.
2. Turn OFF the ignition.
3. Disconnect the accelerator pedal position
(APP) sensor harness connector.
4. Turn ON the ignition, with the engine OFF.
Does the DMM voltage change to more than
the specified value?
4.5 volts
Go to Step 15 Go to Step 9
9
1. Test the 5 volts reference circuit 2 between the
ECM (pin 61 of J-14) and the following
components for a short to ground or short to
the low reference circuit:
• APP sensor 2 (pin 1 of B-5)
• BARO sensor (pin 3 of B-121)
2. Test the 5 volts reference circuit 5 between the
ECM (pin 87 of E-12) and the following
components for a short to ground or short to
the low reference circuit:
• FRP sensor (pin 3 of E-19)
• CMP sensor (pin 3 of E-18)
• EGR valve position sensor (pin 1 of E-15)
3. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 17 Go to Step 16
Step Action Value(s) Yes No
LG4HKED-WE-0871.book 227 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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