Page 4457 of 5135
A81017
Generator (Alternator)Glow Plug ECMGlow
Plug
Relay Battery
Duty Ratio
A81018
Ignition Switch
Glow Plug
Engine Speed
Starting EngineAfter Glow Time OFFOFF ON ON
OFF After Glow System:
0
020
(68)40
(104)
After Glow Time (second)Engine Coolant Temperature_C(_F) 120 05−386
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0380 GLOW PLUG/HEATER CIRCUIT ”A”
CIRCUIT DESCRIPTION
The glow plug is mounted inside the engine combustion chamber. To ensure the efficient engine starting with
a cold engine, the ECM calculates a time interval of the current needs to flow through the glow plug depend-
ing on the starting engine coolant temperature when the ignition switch is turned to ON. The ECM then turns
on the glow plug relay and permits the current to flow through the glow plug based on the ECM’s calculated
time. The glow plug is then heated and enhances fuel combustion with a cold engine.
This DTC will be set if there is open in glow plug itself or its circuit.
HINT:
After the engine is started, the ECM performs an ”after−glow” for a certain period of time. In proportion to
the actual engine coolant temperature, the time period varies. The after−grow reduces diesel engine knock-
ing, white smoke and engine noises with a cold engine.
05CPT−03
Page 4458 of 5135
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−387
AVENSIS Supplement (RM1045E)DTC No.
DTC Detection ConditionTrouble Area
P0380
When the glow plug is turned from ON to OFF, or vice versa,
conditions (a) and (b) are satisfied:
(2 trip detection logic)
(a) Battery voltage does not change
(b) Duty signal from terminal M of the generator (alternator)
does not changeSOpen or short in glow plug circuit
SGlow fuse
SGlow plug relay
SGlow plug
SECM
MONITOR DESCRIPTION
When starting a cold engine, the ECM supplies current to the glow plug for a certain period of time. As supply-
ing the current to the glow plug is terminated, the large current is suddenly cut off, therefore the battery volt-
age then varies and also the output (duty ratio) from terminal M of the generator (alternator) varies. If these
variations are not occurred when the glow plug is turned from ON to OFF, or vice versa, the ECM judges the
current has not been supplied to the glow plug, and interprets this as open malfunction of the glow plug or
glow plug circuit.
MONITOR STRATEGY
Required SensorsGlow plug circuit
Frequency of operationTwice per driving cycle
Duration3 minutes
CHK ENG Operation2 driving cycles
TYPICAL ENABLING CONDITIONS
ItemSpecificationItemMinimumMaximum
Battery voltage11 V−
Engine speed700 rpm2,000 rpm
Engine coolant temperature−40_C (104_F)
Engine speed is stable−
Time after engine start8 seconds−
Any switches that vary electrical load
have not been being operated−
The monitor will not run if the generator (alternator) circuit is malfunctioning
TYPICAL MALFUNCTION THRESHOLDS
Threshold
When the battery voltage, or output (duty ratio) from terminal M of the generator (alternator) does not change, despite the ECM turning the glow
plug from ON to OFF, or vice versa
Page 4459 of 5135
A81005
ECM
ALT 8
E13
IK1 G−Y
G2
GLOW
Relay1
2 3
G1
Glow Plug110
GLOW
Battery
EI R
4 B−L
B
FL
MAIN
BR B
ALT
12
12
33
BB
Engine Room
R/B No. 3
IJBR BR
B
B 3
333
1 25 15DH
DN 1 DH
18DB 9 DA ECU−IG I13
Ignition Switch 3
1
AM1AM1 IG1
G−R
ED1 1
WDriver
Side J/B
IG1
RelayA12 1
BB−L
A11 3
MY
A11 4
LRL 9
E13
Generator
(Alternator)
IG S
2A11
1 A11 A11
R−WB
IK21
EE1 5GREL 15
E9
R
R
B
R−W R−W
W−B
G J10(LHD)
C J20(RHD)
J/C
G J10(LHD)
C J20(RHD)
ALT−SEFI
1 2
1 2 11
11AEngine
Room
R/B No. 1 IE3 7 (LHD)
(RHD)
IO1 7BATT 2
E10
E1 7
E12 B−Y
B
B−R (LHD)
B−Y (RHD)
05−388
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
Page 4460 of 5135
A81506
From Battery
Glow System Wiring Diagram:
Glow Plug Relay
Glow Plug ECM
GREL
GLOW Fuse
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −389
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
S After completing repairs, confirm that P0380 is not present again.
S Read freeze frame data using the hand −held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or
rich, and other data from the time the malfunction occurred.
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P0380)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the hand −held tester ON.
(c) Select the item ”DIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODES”.
(d) Read DTCs.
Result:
Display (DTC output)Proceed to
P0380A
P0380 and P0622B
HINT:
If any other codes besides P0380 and P0622 are output, perform troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART(See page 05 −299)
A
Page 4461 of 5135
A85520
123
2 3
4
4
1
A80987
R/B No. 3:
GLOW
Fuse
B08263
Ohmmeter
Continuity 05−390
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
2 INSPECT GLOW PLUG RELAY ASSY
(a) Remove the glow plug relay.
(b) Check for continuity in the glow plug relay.
(1) Check that there is continuity between the termi-
nals.
Standard:
Tester ConnectionSpecified Condition
No continuity
3−4Continuity
(Apply battery voltage to terminals 1 and 2)
1−2Continuity
(c) Reinstall the glow plug relay.
NG REPLACE GLOW PLUG RELAY ASSY
OK
3 INSPECT FUSE(GLOW FUSE)
(a) Remove the GLOW fuse from the R/B No. 3.
(b) Check for continuity in the GLOW fuse.
Standard: Continuity
(c) Reinstall the GLOW fuse.
NG CHECK FOR SHORT IN ALL HARNESS AND
COMPONENTS CONNECTED TO FUSE
OK
4 INSPECT GLOW PLUG ASSY
(a) Disconnect the glow plug wire.
(b) Measure the resistance in the glow plug.
Standard:
Tester ConnectionSpecified Condition
Glow plug terminal−Body groundApproximately 1.1at 20_C (68_F)
NOTICE:
SExercise extreme care not to damage the glow plug
pipes. Damaging them could cause an open circuit, or
shorten the life of the glow plugs.
SKeep the glow plug free of oil and fuel while cleaning.
SWipe any oil off the terminal and Bakelite washer with
a clean−dry cloth during inspection.
SDo not apply more than11V to the glow plug as it
could cause an open circuit.
(c) Reconnect the glow plug wire.
Page 4462 of 5135
A81091
E9
ECM ConnectorGREL
A85521
−S
+S3
41
2
A85521
L
B3
41
2
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−391
AVENSIS Supplement (RM1045E)
NG REPLACE GLOW PLUG ASSY
(See page19−33 of Pub. No. RM1018E AVENSIS
REPAIR MANUAL)
OK
5 INSPECT GLOW PLUG ASSY(INSTALLATION)
NG TIGHTEN GLOW PLUG
OK
6 CHECK HARNESS AND CONNECTOR(GLOW PLUG RELAY−ECM, AND GLOW
PLUG RELAY−BODY GROUND)
(a) Disconnect the E9 ECM connector.
(b) Remove the glow plug relay.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
+S (Glow plug relay terminal 2)−GREL (E9−15)Below1−S (Glow plug relay terminal 1)−Body groundBelow 1
Standard (Check for short):
Tester ConnectionSpecified Condition
GREL (E9−15)−Body ground10 kor higher
(d) Reconnect the ECM connector.
(e) Reinstall the glow plug relay.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
7 CHECK HARNESS AND CONNECTOR(GLOW PLUG RELAY−GLOW PLUG, AND
GLOW PLUG RELAY−BATTERY)
(a) Remove the glow plug relay.
(b) Disconnect the glow plug wire.
(c) Check the resistance between the wire harness.
Standard (Check for open):
Tester ConnectionSpecified Condition
L (Glow plug relay terminal 3)−Glow plug wire
B (Glow plug relay terminal 4)
−Positive terminal of the batteryBelow 1
(d) Reinstall the glow plug relay.
(e) Reconnect the glow plug wire.
Page 4463 of 5135
A66060
E13E9
E2 GREL
ECM Connector
A80463
BATT (+)
E10E12
E1 (
−)
ECM Connector
05 −392
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
8 INSPECT ECM(GREL VOLTAGE)
(a) Turn the ignition switch to START.
(b) Measure the voltage between the specified terminals of the E9 and E13 ECM connectors.
Standard:
Tester ConnectionConditionSpecified Condition
GREL (E9 −15) −
E2 (E13 −28)Engine coolant tempera-
ture is 40 _ C (104 _ F) or
less
9to 14V
NG REPLACE ECM (See page 10− 29)
OK
9 INSPECT ECM(BATT VOLTAGE)
(a) Measure the voltage between the specified terminals of the E10 and E12 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
BATT (E10 −2) − E1 (E12 −7)9to 14V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (BATTERY − ECM)
OK
CHECK FOR INTERMITTENT PROBLEMS (See page 05 −270)
Page 4464 of 5135
100LY−01
A84695
Mass Air Flow
Meter Connector
N·m (kgf·cm, ft·lbf) : Specified torqueEngine Cover Sub−assy
No. 1
9.0 (92, 80 in.lbf)
VSV
Connector Fuel Vapor Feed
Hose
Clip
Engine Room Cover Side
Radiator Support Opening Cover
Clip
Retainer
x2
x4
1.5 (15, 13 in.lbf)
Air Cleaner Filter
Element Sub−assy x2
Air Cleaner Cap
Sub−assy
− ENGINE CONTROL SYSTEMKNOCK SENSOR (2AZ−FSE)
10−11
AVENSIS Supplement (RM1045E)
KNOCK SENSOR (2AZ−FSE)
COMPONENTS