Engine Control System (4HK1) 1A-265
6
Connect a test lamp between the low reference
circuit (pin 3 of B-5) and battery voltage.
Does the test lamp illuminate?
—
Go to Step 9 Go to Step 8
7
Important: The APP sensor 2 may be damaged if
the sensor signal circuit is shorted to a voltage
source.
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:
• A short to battery or ignition voltage
• A short to any 5 volts reference
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 13 Go to Step 12
8
Notice: The APP sensor 2 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 60 of J-14) and the APP sensor (pin
3 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 13 Go to Step 10
9
1. Inspect for an intermittent and for a poor
connection at the harness connector of the
APP sensor (pin 3 of B-5).
2. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 13 Go to Step 11
10
1. Turn OFF the ignition.
2. Disconnect the ECM harness connector.
3. Inspect for an intermittent and for a poor
connection at the harness connector of the
ECM (pin 60 of J-14).
4. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 13 Go to Step 12
11
Replace the APP sensor. Refer to Accelerator
Pedal Sensor in Section 1I Engine Speed Control
System.
Did you complete the replacement?
—
Go to Step 13
—
12
Important: Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
—
Go to Step 13
—
Step Action Value(s) Yes No
LG4HKED-WE-0871.book 265 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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