2007 ISUZU KB P190 engine

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ISUZU KB P190 2007  Workshop Repair Manual 6E-170  Engine Control System (4JH1) 
Step Action  Value(s) Yes No 
7  Observe the DTC Information with the scan tool. 
Are there any DTCs that you have not diagnosed?    Go to Diagnostic 
Trouble

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ISUZU KB P190 2007  Workshop Repair Manual Engine Control System (4JH1)  6E-171 
DTC P0561 (Symptom Code A) (Flash Code 18) 
Circuit Description  
The engine control module (ECM) main relay is 
energized when the ECM receives an ignition volta

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ISUZU KB P190 2007  Workshop Repair Manual 6E-172  Engine Control System (4JH1) 
Step Action  Value(s) Yes No 
4   1.  Turn OFF the ignition. 
2. Disconnect the ignition voltage feed harness connector (C-107) from the junction block  
(behind

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ISUZU KB P190 2007  Workshop Repair Manual Engine Control System (4JH1)  6E-173 
DTC P0561 (Symptom Code B) (Flash Code 18) 
Circuit Description  
The engine control module (ECM) main relay is 
energized when the ECM receives an ignition volta

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ISUZU KB P190 2007  Workshop Repair Manual 6E-174  Engine Control System (4JH1) 
DTC P0602 
Description  
The engine control module (ECM) has the ability to set 
a diagnostic trouble code (DTC) if it detects that there is 
no vehicle identific

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ISUZU KB P190 2007  Workshop Repair Manual Engine Control System (4JH1)  6E-175 
DTC P0606 (Symptom Code A, B) (Flash Code 28) 
Description  
This diagnostic applies to internal microprocesso
r 
integrity conditions within the engine control m

Page 1210 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E-176  Engine Control System (4JH1) 
DTC P0645 (Symptom Code 4) (Flash Code 46) 
Circuit Description  
The engine control module (ECM) controls the ai
r 
conditioning (A/C) compressor relay, which su

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ISUZU KB P190 2007  Workshop Repair Manual Engine Control System (4JH1)  6E-177 
Step Action  Value(s) Yes No 
6  1.  Turn OFF the ignition. 
2.  Remove the A/C compressor relay.  
3.  Connect a test lamp between the voltage feed  circuit of t