2004 ISUZU TF SERIES Workshop Manual

Page 1505 of 4264

ISUZU TF SERIES 2004  Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E –133
7 Using the DVM and check the MAF sensor power 
supply circuit. 
1. Ignition   “Off ”, engine  “Off ”.  
2. Disconnect the MAF & IAT senso

Page 1506 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6E –134 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0100 (Symptom Code B) (Flash Code 65)  
Mass Air Flow (MAF) Sensor Output Circuit Low Input
Step Action Value(s) Ye

Page 1507 of 4264

ISUZU TF SERIES 2004  Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E –135
6 Using the DVM and check the MAF sensor signal 
circuit.
Breaker box is available:  
1. Ignition   “Off ”, engine  “Off ”.  
2. Install t

Page 1508 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6E –136 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
8 Repair the open circuit between the ECM and MAF 
sensor. 
Was the problem solved? 
— Verify repair Go to  Step 13 
9 Using the DVM and check t

Page 1509 of 4264

ISUZU TF SERIES 2004  Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E –137
Diagnostic Trouble Code (DTC) P0100 (Symptom Code C) (Flash Code 65)  
Mass Air Flow (MAF) Sensor Output Circuit High Input
Step Action Value(s) Y

Page 1510 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6E –138 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
6 Using the DVM and check the MAF sensor ground 
circuit.
Breaker box is available:  
1. Ignition   “Off ”, engine  “Off ”.  
2. Install t

Page 1511 of 4264

ISUZU TF SERIES 2004  Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E –139
8 Using the DVM and check the MAF sensor signal 
circuit. 
1. Ignition   “On ”, engine  “Off ”.  
2. Disconnect the MAF sensor connector.

Page 1512 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6E–140 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
DIAGNOSTIC TROUBLE CODE (DTC) P0105 (SYMPTOM CODE 1) (FLASH 
CODE 34) VACUUM PRESSURE SENSOR CIRCUIT HIGH INPUT
DIAGNOSTIC TROUBLE CODE (DTC) P0105