Isuzu 2008MY N Series - Page 279

1A-276 Engine Control System (4HK1)
5
1. Turn OFF the ignition.
2. Disconnect the boost pressure sensor
harness connector.
3. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the boost pressure sensor (pins
1, 2 and 3 of E-24).
4. Disconnect the ECM harness connector.
5. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the ECM (pins 91,95 and 109 of
E-12).
6. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 11 Go to Step 6
6
1. Test each sensor circuit between the ECM
(pins 91, 95 and 109 of E-12) and the boost
pressure sensor (pins 1, 2 and 3 of E-24) for
high resistance.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 11 Go to Step 9
7
1. Turn OFF the ignition.
2. Disconnect the BARO sensor harness
connector.
3. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the BARO sensor (pins 1, 2 and
3 of B-121).
4. Disconnect the ECM harness connector.
5. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the ECM (pins 60, 61 and 71 of
J-14).
6. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 11 Go to Step 8
8
1. Test each sensor circuits between the ECM
(pins 60, 61 and 71 of J-14) and the BARO
sensor (pins 1, 2 and 3 of B-121) for high
resistance.
2. Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 11 Go to Step 10
9
Replace the boost pressure sensor. Refer to Boost
Pressure Sensor in Section 1J Induction.
Did you complete the replacement?
—
Go to Step 11
—
10
Replace the BARO sensor. Refer to BARO Sensor
Replacement.
Did you complete the replacement?
—
Go to Step 11
—
Step Action Value(s) Yes No
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