Isuzu 1999 RODEO Workshop Manual page 843

6E1–216 RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
Step
6 1. Check the KS signal circuit for a poor terminal
connection at the knock sensor.
2. If a problem is found, repair as necessary. Refer to
Wiring Repairs in Engine Electrical.
Was a problem found?
7 1. Re–Connect the KS Sensor in order to monitor the
voltage between the KS sensor terminal and the
engine ground.
2. Tap on the engine lift bracket, near the KS Sensor,
while observing the signal indicated on the Tech 2.
Is any signal indicated on the while tapping on the
engine lift bracket?
8 1. Turn OFF the ignition.
2. Disconnect the PCM.
3. Turn ON the ignition.
4. Check the KS signal circuit between the PCM and
the KS sensor connector for an open, a short to
voltage, or a short to ground.
5. If a wiring problem is found, repair as necessary.
Was a problem found?
9 Replace the KS Sensor. Refer to Knock Sensor.
Is the action complete?
10 Replace the PCM.
IMPORTANT: If the PCM is faulty, reprogram the PCM.
Refer to PCM Replacement/Programming.
Is the action complete?
11 1. Using the Tech 2, select the DTC and the Clear Info.
2. Start the engine.
3. Idle at the normal operating temperature.
4. Select the DTC and the Specific.
5. Enter the DTC number which was set.
6. Operate the vehicle within the conditions for setting
this DTC as specified in the supporting text.
Does the Tech 2 indicate that this diagnostic ran and
passed?
12 Using the Tech 2, select the Capture Info and the
Review Info.
Are any DTCs displayed that have not been
diagnosed?
DTC P0327 KS Circuit Low Input (Cont'd)
Action Value(s) Yes
— Go to Step 7
Go to Step
—
11
Go to Step
— 11
Go to Step
—
11
Go to Step
— 11
Go to Step
— 12
Go to
applicable
— DTC table
No
Go to Step 9
Go to Step 8
Go to Step
10
—
—
Go to Step 2
System OK