DI5OY
−
03
−
DIAGNOSTICS
ENGINE
DI
−
19
1996 LAND CRUISER (RM451U)
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed in the DTC check and the problem still can not be confirmed
in the basic inspection, then proceed to this step and perform troubleshooting according to the numbered
order given in the table below.
Symptom
Suspect Area
See page
Engine does not crank (Does not start)
1. Starting system
ST
−
16
No initial combustion (Does not start)
1. ECM power source circuit
2. Fuel pump control circuit
DI
−
110
DI
−
115
No complete combustion (Does not start)
1. Fuel pump control circuit
DI
−
115
Engine cranks normally (Difficult to start)
1. Starter signal circuit
2. Fuel pump control circuit
3. Compression
DI
−
103
DI
−
115
EM
−
3
Cold engine (Difficult to start)
1. Starter signal circuit
2. Fuel pump control circuit
DI
−
103
DI
−
115
Hot engine (Difficult to start)
1. Starter signal circuit
2. Fuel pressure control circuit
3. Fuel pump control circuit
DI
−
103
DI
−
125
DI
−
115
High engine idle speed (Poor idling)
1. A/C signal circuit
2. ECM power source circuit
AC
−
5
DI
−
110
Low engine idle speed (Poor idling)
1. A/C signal circuit
2. Fuel pump control circuit
AC
−
5
DI
−
115
Rough idling (Poor idling)
1. Compression
2. Fuel pump control circuit
EM
−
3
DI
−
115
Hunting (Poor idling)
1. ECM power source circuit
2. Fuel pump control circuit
DI
−
110
DI
−
115
Hesitation/Poor acceleration (Poor driveability)
1. Fuel pump control circuit
2. A/T faulty
DI
−
115
DI
−
147
Surging (Poor driveability)
1. Fuel pump control circuit
DI
−
115
Soon after starting (Engine stall)
1. Fuel pump control circuit
DI
−
115
During A/C operation (Engine stall)
1. A/C signal circuit
2. Engine control module (ECM)
AC
−
5
IN
−
18
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Version 1.00 - 12/21/2010
