2004 ISUZU TF SERIES Workshop Manual

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Page 1585 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–213 13 Check any accessory parts which may cause electric interference or magnetic interference. Was the problem found?—Remove the accessory parts

Page 1586 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6E –214 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS Diagnostic Trouble Code (DTC) P0335 (Symptom Code E) (Flash Code 43) Engine Speed Input Circuit Range/Performance Step Action Value(s) Yes No 1

Page 1587 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–215 6 Using the DVM and check the CKP sensor signal. 1. Ignition “On”, engine “On”. 2. Measure the CKP output voltage at the sensor and ECM.

Page 1588 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6E–216 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 13 Replace the ECM. Is the action complete? IMPORTANT: The replacement ECM must be programmed. Refer to section of the Service Programming System

Page 1589 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–217 DIAGNOSTIC TROUBLE CODE (DTC) P0380 (SYMPTOM CODE 4) (FLASH CODE 66) GLOW RELAY CIRCUIT VOLTAGE LOW DIAGNOSTIC TROUBLE CODE (DTC) P0380 (SYMPTOM C

Page 1590 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6E –218 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS  Poor connection at ECM-Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged termina

Page 1591 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E –219 6 Using the DVM and check the glow relay power supply circuit. 1. Ignition “On ”, engine “Off ”. 2. Remove the glow relay from the

Page 1592 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6E–220 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 9 Is the ECM programmed with the latest software release? If not, download the latest software to the ECM using the “SPS (Service Programming Sy
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