Engine Control System (4HK1) 1A-263
4
1. Turn OFF the ignition.
2. Disconnect the APP sensor harness
connector.
3. Connect a DMM between the 5 volts reference
circuit (pin 1 of B-5) and a known good
ground.
4. Turn ON the ignition, with the engine OFF.
Is the DMM voltage more than the specified
value?
4.5 volts
Go to Step 5 Go to Step 6
5
Connect a 3-amp fused jumper wire between the 5
volts reference circuit and the signal circuit (pins 1
and 2 of B-5).
Is the APP Sensor 2 parameter more than the
specified value?
4.5 volts
Go to Step 8 Go to Step 7
6
Notice: The APP sensor 2 shares the 5 volts
reference circuit with other sensors. A fault
condition in the 5 volts reference circuit may set
DTCs on sensors that share this circuit.
1. Test the 5 volts reference circuit between the
ECM (pin 61 of J-14) and the APP sensor (pin
1 of B-5) for an open circuit or high resistance.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 12 Go to Step 9
7
1. Test the signal circuit between the ECM (pin
64 of J-14) and the APP sensor (pin 2 of B-5)
for the following conditions:
• An open circuit
• A short to ground
• A short to the low reference circuit
• High resistance
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 12 Go to Step 9
8
1. Inspect for an intermittent and for poor
connections at the harness connector of the
APP sensor (pins 1 and 2 of B-5).
2. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 12 Go to Step 10
9
1. Turn OFF the ignition.
2. Disconnect the ECM harness connector.
3. Inspect for an intermittent and for poor
connections at the harness connector of the
ECM (pins 61 and 64 of J-14).
4. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 12 Go to Step 11
10
Replace the APP sensor. Refer to Accelerator
Pedal Sensor in Section 1I Engine Speed Control
System.
Did you complete the replacement?
—
Go to Step 12
—
Step Action Value(s) Yes No
LG4HKED-WE-0871.book 263 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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