4jh1 ISUZU TF SERIES 2004 Owner's Guide
Page 728 of 4264
8A-70  ELECTRICAL-BODY AND CHASSIS 
C24SE / 6VE1 / 4A1-TC / 4JA1-TC / 4JH1-TC 
 RTW48AXF031801  
Page 738 of 4264
8A-80  ELECTRICAL-BODY AND CHASSIS 
CIRCUIT DIAGRAM 4JA1-TC / 4JH1-TC (RHD) G.EXP 
  
 
 
 
RTW48AXF008501  
Page 739 of 4264
ELECTRICAL-BODY AND CHASSIS  8A-81 
CIRCUIT DIAGRAM 4JA1-TC / 4JH1-TC (RHD) EUROPE 
  
 
 
 
RTW48AXF008701  
Page 743 of 4264
ELECTRICAL-BODY AND CHASSIS  8A-85 
CIRCUIT DIAGRAM 4JA1-TC / 4JH1-TC (LHD) G.EXP 
  
 
 
 
RTW48AXF008601 
  
Page 744 of 4264
8A-86  ELECTRICAL-BODY AND CHASSIS 
CIRCUIT DIAGRAM 4JA1-TC / 4JH1-TC (LHD) EUROPE 
  
 
 
 
RTW48AXF008801  
Page 751 of 4264
ELECTRICAL-BODY AND CHASSIS  8A-93 
PARTS LOCATION 4JA1-TC / 4JH1-TC 
 RTW38DXF007601  
Page 759 of 4264
ELECTRICAL-BODY AND CHASSIS  8A-101 
 
CIRCUIT DIAGRAM 4JH1-TC Sheet 1/2 
  
 
 
 RTW48AXF031201  
Page 760 of 4264
8A-102  ELECTRICAL-BODY AND CHASSIS 
 
CIRCUIT DIAGRAM 4JH1-TC Sheet 2/2 
  
 
 
 RTW48AXF027701  
Page 765 of 4264
ELECTRICAL-BODY AND CHASSIS  8A-107 
   REMOVAL AND INSTALLATION 
 
 
ECM (ENGINE CONTROL MODULE): 
4JA1-TC / 4JH1-TC 
 
 
Removal 
1.  Remove the passenger side front seat – refer to Section 10 
CAB. 
2.  Remove the passenger side front door opening scuff plate.
3.  Raise the carpet to gain access to the four hex-head bolts 
securing the ECM and ECM cover to the floorpan
. 
4.  Remove the four hex-head bolts. 
5. Pull the two harness connector locks away from the 
harness connectors and then remove the connectors form 
the ECM. 
6.  Remove the ECM from the vehicle. 
Refer to the Section 6E-ENGINE of this Manual. 
IMPORTANT: The replacement ECM must be programmed. 
“SPS (Service Programming System) and immobiliser 
programming (if equipped) is/are necessary” 
 
 
 
 
 
 
 
Installation 
Follow the removal procedure in the reverse order to install the 
ECM. 
Torque passenger seat securing bolts to the specified value – 
refer to Section 10 CAB 
Pay close attention to the important points mentioned in the 
following paragraphs. 
 
 
  
Connector 
Be absolutely sure that ECM is securely connected. 
This will prevent a poor contact and open circuit. 
 
  
Page 875 of 4264
ELECTRICAL-BODY AND CHASSIS  8A-217 
PARTS LOCATION 4JH1-TC 
 RTW38DXF007601