Isuzu 2008MY N Series - Go to Step 7

Engine Control System (4HK1) 1A-199
4
Drive the vehicle while observing the Vehicle
Speed parameter with a scan tool.
Does the scan tool indicate correct vehicle
speed?
—
Go to Diagnostic
Aids Go to Step 5
5
1. Turn OFF the ignition.
2. Disconnect the EHCU harness connector.
3. Inspect for an intermittent, for poor
connections and corrosion at the harness
connector of the EHCU (pins 14 of J-22).
4. Disconnect the ECM harness connector.
5. Inspect for an intermittent, for a poor
connection and corrosion at the harness
connector of the ECM (pin 19 of J-14).
6. Repair the connection(s) as necessary.
Did you find and correct the condition?
—
Go to Step 7 Go to Step 6
6
Important: Replacement EHCU must be
programmed.
Replace the EHCU. Refer to EHCU in Section 4C1
ABS/ASR.
Did you complete the replacement?
—
Go to Step 7
—
7
1. Reconnect all previously disconnected
harness connector(s).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Drive the vehicle while observing the Vehicle
Speed parameter with a scan tool.
Does the scan tool indicate correct vehicle
speed?
—
Go to Step 8 Go to Step 2
8
Observe the DTC Information with a scan tool.
Are there any DTCs that you have not
diagnosed?
—
Go to DTC List System OK
Step Action Value(s) Yes No
LG4HKED-WE-0871.book 199 ページ ２００７年１１月２９日 木曜日 午後６時２９分