2004 ISUZU TF SERIES Workshop Manual

Page 2297 of 4264

ISUZU TF SERIES 2004  Workshop Manual 3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-301 
Step   Action  Value (s)  Yes  No 
 Breaker box is not available: 
1.  Using the Tech 2, ignition "On" and engine "Off".  
2. Select the "Miscellaneous T

Page 2298 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6E-302 3.5L ENGINE DRIVEABILITY AND EMISSIONS 
Step   Action  Value (s)  Yes  No 
10 
 Using the DVM and check the IAC Valve circuit. 
Breaker box is available:  
1.  Ignition "Off", engine "Off".  
2

Page 2299 of 4264

ISUZU TF SERIES 2004  Workshop Manual 3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-303 
Step   Action  Value (s)  Yes  No 
11 
 Using the DVM and check the IAC Valve circuit. 
1.  Ignition "On", engine "Off".  
2.  Disconnect the IAC Valve c

Page 2300 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6E-304 3.5L ENGINE DRIVEABILITY AND EMISSIONS 
DIAGNOSTIC TROUBLE CODE (DTC) P1601 (FLASH CODE 65) CAN BUS OFF 
  
 
 
RTW46EMF000301 
 
Condition For Setting The DTC and Action Taken When The DTC Set

Page 2301 of 4264

ISUZU TF SERIES 2004  Workshop Manual 3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-305 
Diagnostic Trouble Code (DTC) P1601 (Flash Code 65) CAN Bus Off 
 
Step   Action  Value (s)  Yes  No 
1 
Was the "On-Board Diagnostic (OBD) System Check"

Page 2302 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6E-306 3.5L ENGINE DRIVEABILITY AND EMISSIONS 
Step   Action  Value (s)  Yes  No 
7 
 Using the DVM and check the CAN BUS high circuit. 
1.  Ignition "Off", engine "Off".  
2.  Disconnect the TCM conn

Page 2303 of 4264

ISUZU TF SERIES 2004  Workshop Manual 3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-307 
Step   Action  Value (s)  Yes  No 
10 
Repair the open circuit between the ECM CAN BUS 
high and low circuit.  
Was the problem solved? 
E-60(A)



Page 2304 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6E-308 3.5L ENGINE DRIVEABILITY AND EMISSIONS 
Step   Action  Value (s)  Yes  No 
 
Breaker box is not available:  
1.  Ignition "Off", engine "Off".  
2. Disconnect the TCM connector and ECM 
connect