6-2-110 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
DTC P0327 Knock Sensor Circuit Low
DTC P0328 Knock Sensor Circuit High
Wiring Diagram
DTC Detecting Condition and Trouble Area
9 Engine mechanical systems check.
Check engine mechanical parts or system which can
cause engine rough idle or poor performance.
– Engine compression (Refer to “Compression
Check” in Section 6A2.)
– Valve lash adjustor (Refer to “Valve Lash (Clear-
ance) Inspection in Section 6A2.)
– Valve timing (Refer to “Timing Chain and Chain Ten-
sioner Removal and Installation in Section 6A2.)
Are they in good condition?
Check wire harness
and connection of
ECM ground, ignition
system and fuel injec-
tor for intermittent
open and short.
Repair or replace.
Step Action Yes No
1. Knock sensor 2. ECM
E23 E22 E21
12345671234561234567
7
891011121314151617 8910111213141516 891011121314151617
1819
1819
1718192021222324252627 20212223 202122232425 24252627 2627
2829303132 32 282930 28293031 3133 33 323334 3435 3435
1
2
WHT
E22-9
DTC Detecting Condition Trouble Area
DTC will be set when all of the following conditions are
detected for 0.5 seconds continuously.
P0327
• Engine is running
• Voltage of knock sensor is less than 1.23 V
P0328
• Engine is running
• Voltage of knock sensor is 3.91 V or more
• Open or short in knock sensor circuit
• Knock sensor
• ECM
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