Dtc P0016 (Flash Code 16) - Isuzu N 2008 Series Workshop Manual

DTC P0016 (Flash Code 16)

Circuit Description
The crankshaft position (CKP) sensor is located on the
left-hand of the cylinder block rear. The sensor rotor is
fixed on the crankshaft. There are 56 notches spaced
6° apart and a 30° section that is open span. This open
span portion allows for the detection of top dead center
(TDC).
The camshaft position (CMP) sensor is installed on the
timing chain sprocket cover at the front of the camshaft
idle gear. The CMP sensor detects total of five
projections per one engine cycle (four projections
arranged equally every 90° and one reference
projection on the timing chain sprocket surface).
Detecting the open span portion from the CKP sensor
and one reference projection from the CMP sensor, the
ECM determines cylinder #1 compression TDC to
ensure they correlate with each other. If the ECM
detects both signals are out of synchronization, this
DTC will set.
Condition for Running the DTC
• DTCs P0335, P0336, P0340 and P0341 are not
set.
Circuit/ System Testing DTC P0016
Step
Did you perform the Diagnostic System Check -
1 Engine Controls?
1. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Start the engine. If the engine does not start,
2
crank over the engine for 10 seconds.
4. Monitor the DTC Information with a scan tool.
Is DTC P0335, P0336, P0340 or P0341 also set?
Action
Engine Control System (4JJ1)
• The ignition switch is ON.
• The CKP sensor signal pulse is detected.
• The CMP sensor signal pulse is detected.
Condition for Setting the DTC
• The ECM detects that the CKP sensor signal
pulses and CMP sensor signal pulses are out of
synchronization during engine rotations.
Action Taken When the DTC Sets
• The ECM illuminates the MIL when the diagnostic
runs and fails. Refer to DTC Type Definitions for
Action Taken When the DTC Sets - Type A.
Condition for Clearing the DTC
• Refer to DTC Type Definitions for Condition for
Clearing the MIL/ DTC - Type A.
Diagnostic Aids
• This DTC is cause by an incorrect mechanical
timing condition, which is most likely caused by
wrong installation of timing gear or chain.
Value(s) Yes
—
Go to Step 2
—
Go to Applicable
DTC
1A-59
No
Go to Diagnostic
System Check -
Engine Controls
Go to Step 3