2007 ISUZU KB P190 engine

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Page 1244 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E-210  Engine Control System (4JH1) 
DTC P1520 (Symptom Code A) (Flash Code 47) 
Circuit Description  
(Manual Transmission) 
The neutral switch is installed on the transmission gea
r
control box. W

Page 1245 of 6020

ISUZU KB P190 2007  Workshop Repair Manual Engine Control System (4JH1)  6E-211 
Step Action  Value(s) Yes No 
5  Replace the neutral switch. Refer to Neutral Switch 
Replacement in Transmission Section.  
 Did you complete the replacement?

Page 1246 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E-212  Engine Control System (4JH1) 
Step Action  Value(s) Yes No 
4  1.  Check to ensure the inhibitor switch is adjusted 
correctly. 
2.  Adjust the inhibitor switch as necessary. Refer to  Inhibit

Page 1247 of 6020

ISUZU KB P190 2007  Workshop Repair Manual Engine Control System (4JH1)  6E-213 
DTC P1520 (Symptom Code B) (Flash Code 47) 
Circuit Description  
The neutral switch is installed on the transmission gea
r
control box. W hen the gear position i

Page 1248 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E-214  Engine Control System (4JH1) 
Step Action  Value(s) Yes No 
5  1.  Turn OFF the ignition. 
2.  Disconnect the neutral switch harness connector. 
3.  Turn ON the ignition, with the engine OFF.

Page 1249 of 6020

ISUZU KB P190 2007  Workshop Repair Manual Engine Control System (4JH1)  6E-215 
Step Action  Value(s) Yes No 
13  1.  Reconnect all previously disconnected harness 
connector(s). 
2.  Clear the DTCs with the scan tool.  
Important:  Following

Page 1250 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E-216  Engine Control System (4JH1) 
DTC P1605 (Symptom Code C, D, E) (Flash Code 55) 
Circuit Description  
This diagnostic applies to internal microprocesso
r
integrity conditions within the engine

Page 1251 of 6020

ISUZU KB P190 2007  Workshop Repair Manual Engine Control System (4JH1)  6E-217 
DTC P1610 (Symptom Code A) (Flash Code 56) 
Circuit Description  
The electronically erasable programmable read onl
y 
memory (EEPROM) memorize immobilizer securi