Chapter 1: Electronic Circuit Matrix Chart

PROBLEM SYMPTOMS (ELECTRONIC CIRCUIT MATRIX)

Symptom	Suspect Area
No up shift (A particular gear, from 1st to 4th gear, is not up-shifted)	ECM
No up shift (4th --> 5th)	1. TRANSMISSION CONTROL SWITCH CIRCUIT
No up shift (4th --> 5th)	2. ECM
No down-shift (5th --> 4th)	1. TRANSMISSION CONTROL SWITCH CIRCUIT
No down-shift (5th --> 4th)	2. ECM
No down-shift (A particular gear, from 1st to 4th gear, is not up-shifted)	ECM
No lock up	ECM
No lock up off	ECM
Shift point too high or too low	1. PATTERN SELECT SWITCH CIRCUIT
Shift point too high or too low	2. ECM
Up-shift to 5th from 4th while shift lever is 4 position	1. TRANSMISSION CONTROL SWITCH CIRCUIT
Up-shift to 5th from 4th while shift lever is 4 position	2. ECM
Up-shift to 5th from 4th while engine is cold	ECM
No kick-down	ECM
No pattern select	1. PATTERN SELECT SWITCH CIRCUIT
No pattern select	2. ECM
Engine stalls when starting off or stopping	ECM
No kick-down	ECM
No 2nd start	1. PATTERN SELECT SWITCH CIRCUIT
No 2nd start	2. ECM
No steering shift system	1.TRANSMISSION CONTROL SWITCH CIRCUIT
	2. PATTERN SELECT SWITCH CIRCUIT
	3. ECM