1A-340 Engine Control System (4HK1)
15
1.
Turn OFF the ignition.
2.
Remove the bezel surrounding the IP cluster
enough to disconnect the DPD switch.
3.
Disconnect the DPD switch harness
connector.
4.
Connect a test lamp between the voltage feed
circuit of the DPD switch harness (pin 1 of B-
165) and a known good ground.
5.
Start the engine.
Does the test lamp illuminate?
—
Go to Step 16
Go to Step 17
16
Observe the DPD Switch parameter with a scan
tool while momentarily jumping 3-amp fused
jumper wire across the switch harness connector
between pins 1 and 2 of B-165.
Does the scan tool indicate ON when the
circuit is jumpered and OFF when the circuit is
not jumpered?
—
Go to Step 19
Go to Step 18
17
Repair the open circuit or high resistance between
the ECM (10A) fuse and the switch (pin 1 of B-165).
Check the ECM (10A) fuse first.
Did you complete the repair?
—
Go to Step 23
—
18
1.
Test the signal circuit between the ECM (pin
47 of J-14) and the switch (pin 2 of B-165) for
the following conditions:
• An open circuit
• A short to battery or ignition voltage
• High resistance
2.
Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 23
Go to Step 20
19
1.
Inspect for an intermittent and for poor
connections at the harness connector of the
switch (pins 1 and 2 of B-165).
2.
Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 23
Go to Step 21
20
1.
Inspect for an intermittent, for a poor
connection and corrosion at the harness
connector of the ECM (pin 47 of J-14).
2.
Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 23
Go to Step 22
21
Repair or replace the DPD switch.
Did you complete the repair or replacement?
—
Go to Step 23
—
22
Important:
Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
—
Go to Step 23
—
Step
Action
Value(s)
Yes
No
LG4HKED-WE-0871.book 340
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２００７年１１月２９日 木曜日 午後６時２９分
