DI1IA--01
DI--92
--
DIAGNOSTICS
ENGINE (2RZ--FE, 3RZ--FE)
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed in the diagnostic trouble code check and the problem still can
not be confirmed in the basic inspection, proceed to this problem symptoms tables and troubleshoot accord-
ing to the numbered order given below.
Symptom
Suspect Area
See page
Engine does not crank (does not start)
1. Starter and starter relay
2. Neutral start switch circuit
No initial combustion (Dies not start)
1. ECU power source circuit
2. Ignition circuit
3. Fuel pump control circuit
3. Injector circuit
D I -- 170
D I -- 151
D I -- 174
D I -- 158
No complete combustion (Does not start)
1. Fuel pump control circuit
2. Ignition circuit
3. Injector circuit
D I -- 174
D I -- 151
D I -- 158
Engine cranks normally (Difficult to start)
1. Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Ignition coil (w/ igniter)
5. Spark plug
6. compression
7. Injector circuit
D I -- 162
D I -- 146
D I -- 174
Cold engine (Difficult to start)
1.Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Injector circuit
5. Ignition coil (w/ igniter)
6. Spark plug
D I -- 162
D I -- 146
D I -- 174
D I -- 158
Hot engine (Difficuil to start)
1. Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Injector circuit
5. Ignition coil (w/ igniter)
6. Spark plug
D I -- 162
D I -- 146
D I -- 174
D I -- 158
Incorrect first idle (Poor idling)
1. ISC valve circuit
High engine idle speed (Poor idling)
1. ISC valve circuit
2. ECU power source circuit
3. Neutral start switch circuit
4. Back up power source circuit
D I -- 146
D I -- 170
D I -- 167
D I -- 165
Low engine idle speed (Poor idling)
1. ISC valve circuit
2. Neutral start switch circuit
3. Fuel pump control circuit
4. Injector circuit
5. Air flow meter circuit
6. Back up power source circuit
D I -- 146
D I -- 167
D I -- 174
D I -- 158
Rough idling (Poor idling)
1. ISC valve circuit
2. Air flow meter circuit
3. Injector circuit
4. EGR system
5. Variable resistor circuit *1
6. Ignition circuit
7. Compression
8. Fuel pump control circuit
9. Back up power source circuit
D I -- 158
D I -- 178
D I -- 183
D I -- 151
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Pages From Supplement
3RZ-F,3RZ-FE