Home/Dodge/Caravan/Dodge Caravan I (1984-1990)/Repair manual/3.0l v6 Mpfi System/Code 42

Contents

Section: 3.0l v6 Mpfi System

DESCRIPTION

OPERATION

FUEL CONTROL

Manifold Absolute Pressure (MAP) Sensor

Heated Oxygen (O2) Sensor

Coolant Temperature Sensor (CTS)

Charge Temperature Sensor

Throttle Position Sensor (TPS)

Speed Sensor

Transaxle Neutral Safety Switch

SMEC - SINGLE MODULE ENGINE CONTROLLER

IGNITION CONTROL

IDLE SPEED CONTROL

Canister Purge Solenoid

Lock-Up Torque Converter Solenoid

Cooling Fan Control

Charging System Control

Cruise Control System

ON-BOARD DIAGNOSTICS OPERATION

PRELIMINARY CHECKS

DIAGNOSTIC PROCEDURE

Introduction To Diagnostic System

Diagnostic Mode

Switch Test Mode

Circuit Actuation Test Mode (ATM)

Sensor Test Mode

Engine Running Test Mode

INDICATOR CODES DESCRIPTION

Code 88

Code 55

Code 0

Code 1

Code 12

CIRCUIT ACTUATION TEST (ATM) CODES DESCRIPTION

Code 01

Code 02

Code 03

Code 04

Code 05

Code 06

Code 07

Code 08

Code 09

Code 10

SENSOR TEST CODES DESCRIPTION

ENGINE RUNNING TEST CODES DESCRIPTION

Code 62

Code 63

Code 64

Code 65 & 69

Code 67

Code 68

Code 71

TROUBLE CODES DESCRIPTION

Code 11

Code 13

Code 14

Code 15

Code 16

Code 17

Code 21

Code 22

Code 23

Code 24

Code 25

Code 26

Code 27

Code 31

Code 33

Code 34

Code 35

Code 37

Code 41

Code 42

Code 43

Code 44

Code 46

Code 47

Code 51

Code 52

Code 53

Code 54

ERASING CODES FROM SMEC MEMORY

NS-1 TEST - PRELIMINARY TESTS

NS-3 TEST - IGNITION FAULT CODE CHECK

NS-6 TEST - FUEL INJECTOR SYSTEM (CHECK FOR CODES 26 & 27)

NS-9 TEST - CHECKING SYSTEM FOR CODE

DRIVEABILITY TROUBLE CODE-TO-TEST MENU

DR-13 TEST - FUSED "J2" CIRCUIT TO SMEC (CODE 44)

DR-15 TEST - COLD ENGINE SENSOR CALIBRATION CHECK

DR-16 TEST - WARM ENGINE SENSOR CALIBRATION CHECK

DR-18 TEST - SECONDARY IGNITION SYSTEM CHECK

DR-19 TEST - BASIC IGNITION TIMING CHECK

DR-20 TEST - CHECKING FUEL SUPPLY & RETURN SYSTEM

DR-21 TEST - OXYGEN SENSOR OPERATIONAL CHECK

DR-22 TEST - CHECKING THROTTLE BODY MINIMUM AIRFLOW

DR-23 TEST - NON-ENGINE CONTROL RELATED PROBLEMS

TROUBLE CODE-TO-TEST MENU

CH-2 TEST - CHECKING BATTERY TEMPERATURE SENSOR CALIBRATION

CH-3 TEST - BATTERY VOLTAGE SENSING CIRCUIT (CODE 16)

All sections

Code 42 Dodge Caravan I

3.0l v6 Mpfi System

Code 42

Problem in the ASD relay circuit. This code is stored in memory if relay does not turn on and off when it should. This circuit is monitored whenever the ignition switch is on.