1A-130 Engine Control System (4HK1)
Circuit/ System Testing DTC P0193
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. Turn OFF the ignition for 30 seconds.
3. Start the engine.
4. Monitor the DTC Information with a scan tool.
Is DTC P0651 also set?
—
Go to DTC P0651 Go to Step 3
3
Observe the Fuel Rail Pressure (FRP) Sensor
parameter with a scan tool.
Is the FRP Sensor parameter more than the
specified value?
4.5 volts
Go to Step 4
Go to Diagnostic
Aids
4
1. Turn OFF the ignition.
2. Disconnect the FRP sensor harness
connector.
3. Connect a DMM between the signal circuit
(pin 2 of E-19) and a known good ground.
4. Turn ON the ignition, with the engine OFF.
Is the DMM voltage more than the specified
value?
5.5 volts
Go to Step 10 Go to Step 5
5
1. Connect a test lamp between the signal circuit
(pin 2 of E-19) and a known good ground.
2. Connect a DMM between the probe of the test
lamp and a known good ground.
Is the DMM voltage more than the specified
value?
4.5 volts
Go to Step 9 Go to Step 6
6
Connect a 3-amp fused jumper wire between the
signal circuit and the low reference circuit of the
sensor harness (pins 1 and 2 of E-19).
Is the FRP Sensor parameter less than the
specified value?
0.1 volts
Go to Step 11 Go to Step 7
7
Notice: The FRP sensor shares the low reference
circuit with other sensors. A fault condition in the
low reference circuit may set DTCs on sensors that
share this circuit.
1. Test the low reference circuit between the
ECM (pin 101 of E-12) and the FRP sensor
(pin 1 of E-19) for an open circuit or high
resistance.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 15 Go to Step 8
8
1. Test the signal circuit between the ECM (pins
82 and 90 of E-12) and the FRP sensor (pin 2
of E-19) for an open circuit or high resistance.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 15 Go to Step 12
LG4HKED-WE-0871.book 130 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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