Chapter 1: Electronic Circuit Matrix Chart

PROBLEM SYMPTOMS

Symptom	Suspect Area	See article
No up-shift (A particular gear, from 1st to 4th gear, is not up-shifted)	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No up-shift (4th --> 5th)	Transmission control switch circuit ECM	DTC P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input) HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No down-shift (5th --> 4th)	Transmission control switch circuit ECM	DTC P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input) HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No down-shift (A particular gear, from 1st to 4th gear, is not up-shifted)	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No lock-up	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No lock-up off	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Shift point too high or too low	Pattern select switch circuit ECM	PATTERN SELECT SWITCH CIRCUIT HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Up-shift to 5th from 4th while shift lever is 4 position	Transmission control switch circuit ECM	DTC P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input) HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Up-shift to 5th from 4th while engine is cold	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No kick-down	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No pattern select	Pattern select switch circuit ECM	PATTERN SELECT SWITCH CIRCUIT HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Engine stalls when starting off or stopping	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No kick-down	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
No 2nd start	Pattern select switch circuit ECM	PATTERN SELECT SWITCH CIRCUIT HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE