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Engine Control System (4JH1) 6E-43
Step Action
Value(s)
Yes
No
8
1. Turn OFF the ignition.
2. Disconnect the ECM C-56 and C-57 harness
connectors.
3. Turn ON the ignition, with the engine OFF.
4. Attempt to communicate with the TCM and
EHCU.
Does the scan tool communicate with the TCM and
EHCU?
Go to Step 12
Go to Step 9
9
1. Turn OFF the ignition.
2. Reconnect the ECM C-56 and C-57 harness
connectors.
3. Disconnect the TCM C-94 and C-95 harness
connectors.
4. Turn ON the ignition, with the engine OFF.
5. Attempt to communicate with the ECM and
EHCU.
Does the scan tool communicate with the ECM and
EHCU?
Go to Step 13
Go to Step 10
10
1. Turn OFF the ignition.
2. Reconnect the TCM C-94 and C-95 harness
connectors.
3. Disconnect the EHCU C-67 harness connectors.
4. Turn ON the ignition, with the engine OFF.
5. Attempt to communicate with the ECM and TCM.
Does the scan tool communicate with the ECM and
TCM?
Go to Step 14
Go to Step 11
11
Repair the short to ground or short to voltage on the
Keyword 2000 serial data circuit between the DLC
and ECM, TCM and EHCU.
Did you complete the repair?
Go to Step 15
12
Important:
Replacement ECM must be
programmed.
Replace the ECM. Refer to Engine Control Module
(ECM) Replacement in this section.
Did you complete the replacement?
Go to Step 15
13
Important:
Replacement TCM must be
programmed.
Replace the TCM. Refer to Transmission Control
Module (TCM) Replacement in the transmission
section.
Did you complete the replacement?
Go to Step 15
14
Replace the EHCU. Refer to Electronic Hydraulic
Control Unit in the anti-lock brake system section.
Did you complete the replacement?
Go to Step 15
15
Attempt to communicate with the ECM, TCM and
EHCU.
Does the scan tool communicate with the ECM, TCM
and EHCU?
System OK
Go to Step 2
Summary of Contents for 4ja1
Page 2: ......
Page 34: ...6A 12 ENGINE MECHANICAL Cooling and Lubricating System N m kg m lb ft RTW46AXF000701...
Page 35: ...ENGINE MECHANICAL 6A 13 Intake Manifold 4JA1TC 4JH1TC N m kg m lb ft RTW36AXF000201...
Page 36: ...6A 14 ENGINE MECHANICAL EGR Valve EGR Pipe EGR Cooler RTW46AXF000801...
Page 37: ...ENGINE MECHANICAL 6A 15 Exhaust Manifold and Turbocharger 4JA1L RTW46AXF000901...
Page 39: ...ENGINE MECHANICAL 6A 17 Engine Electricals N m kg m lb ft RTW36AXF000501...
Page 40: ...6A 18 ENGINE MECHANICAL Fuel Injection System 4JA1L N m kg m lb ft RTW86AXF000201...
Page 41: ...ENGINE MECHANICAL 6A 19 Fuel Injection System 4JA1TC N m kg m lb ft RTW46AXF001201...
Page 42: ...6A 20 ENGINE MECHANICAL Fuel Injection System 4JH1TC N m kg m lb ft RTW46AXF001301...
Page 43: ...ENGINE MECHANICAL 6A 21 Engine Mounting Bracket N m kg m lb ft 022R300001...
Page 162: ...MEMO...
Page 187: ...FUEL SYSTEM 6C 5 For EURO III model RTW46AMF000201...
Page 220: ...MEMO...
Page 225: ...ENGINE ELECTRICAL 6D 5 TORQUE SPECIFICATIONS GENERATOR N m kg m Ib ft RTW86DLF000101...
Page 226: ...6D 6 ENGINE ELECTRICAL STARTER MOTOR N m kg m Ib ft RTW86DLF000201...
Page 254: ...MEMO...
Page 261: ...Engine Control System 4JH1 6E 7 Engine Controls Schematics Power Distribution 1 RTW86EXF004801...
Page 262: ...6E 8 Engine Control System 4JH1 Power Distribution 2 RTW86EXF004901...
Page 263: ...Engine Control System 4JH1 6E 9 Starting System RTW86EXF005001...
Page 264: ...6E 10 Engine Control System 4JH1 Charging System RTW86EXF005101...
Page 265: ...Engine Control System 4JH1 6E 11 ECM Power and PCU RTW86EXF003001...
Page 266: ...6E 12 Engine Control System 4JH1 ECM Ground and DLC RTW86EXF005201...
Page 267: ...Engine Control System 4JH1 6E 13 Gauges and Warning Lamps RTW86EXF003201...
Page 269: ...Engine Control System 4JH1 6E 15 MAF IAT Vacuum Pressure and ECT Sensors RTW86EXF003401...
Page 275: ...Engine Control System 4JH1 6E 21 1 Legend 1 Vehicle Speed Sensor VSS...
Page 536: ...MEMO...
Page 558: ...6H 2 ACCELERATOR CONTROL REMOVAL AND INSTALLATION 4JA1T L RHD RTW46HLF000301...
Page 559: ...ACCELERATOR CONTROL 6H 3 4JA1T L LHD RTW46HLF000601...
Page 560: ...6H 4 ACCELERATOR CONTROL 4JA1TC 4JH1TC RHD RTW46HLF000201...
Page 561: ...ACCELERATOR CONTROL 6H 5 4JA1TC 4JH1TC LHD PTW46BMF000101...
Page 564: ...No TF4JE WE 1101...