2000 TOYOTA CAMRY Service Repair Manual

four wheel drive jacking points engine coolant spark plugs remove seats stop start

Page 345 of 4770

TOYOTA CAMRY 2000 Service Repair Manual CUSTOMER PROBLEM ANALYSIS CHECK SHEET
± 5S±FE ENGINECUSTOMER PROBLEM ANALYSIS CHECK SHEETEG1±295

Page 346 of 4770

TOYOTA CAMRY 2000 Service Repair Manual DIAGNOSIS SYSTEM
DESCRIPTION
The ECM contains a built±in self±diagnosis system by which
troubles with the engine signal network are detected and a
Malfunction indicator lamp on the instrument panel

DIAGNOSIS SYSTEM
DESCRIPTION
The ECM contains a built±in self±diagnosis system by which
troubles with the engine signal network are detected and a
Malfunction indicator lamp on the instrument panel lights up.
By analyzing various signals as shown in the later table (See
page EG1±300) the Engine Control Module (ECM) detects
system malfunctions relating to the sensors or actuators.
In the normal mode, the self±diagnosis system monitors 14
items, indicated by code No. as shown in EG1±300. A mal-
function indicator lamp informs the driver that a malfunction
has been detected. The light goes off automatically when the
malfunction has been repaired. But the diagnostic trouble
code(s) remains stored in the ECM memory (except for code
Nos. 16). The ECM stores the code(s) until it is cleared by
removing the EFI fuse with the ignition switch off.
The diagnostic trouble code can be read by the number of
blinks of the malfunction indicator lamp when TE1 and E1
terminals on the data link connector 1 or 2 are connected.
When 2 or more codes are indicated, the lowest number
(code) will appear first.
In the test mode, 9 items, indicated by code No. as shown in
EG1±300 are monitored. If a malfunction is detected in any
one of the systems indicated by code Nos. 13, 22, 24, 25, 26,
27, 31, 41 and 71 the ECM lights the malfunction indicator
lamp to warn the technician that malfunction has been de-
tected. In this case, TE2 and E1 terminals on the data link
connector 1 or 2 should be connected as shown later. (See
page EG1±298).
In the test mode, even if the malfunction is corrected, the
malfunction code is stored in the ECM memory even when
the ignition switch is off (except code Nos. 43 and 51). This
also applies in the normal mode. The diagnostic mode (nor-
mal or test) and the output of the malfunction indicator lamp
can be selected by connecting the TE1, TE2 and E1 termi-
nals on the data link connector 1 or 2, as shown later.
A test mode function has been added to the functions of the
self±diagnostic system of the normal mode for the purpose of
detecting malfunctions such as poor contact, which are diffi-
cult to detect in the normal mode. This function fills up the
self±diagnosis system. The test mode can be implemented
by the technician following the appropriate procedures of
check terminal connection and operation described later.
(See page
EG1±298)
± 5S±FE ENGINEDIAGNOSIS SYSTEMEG1±296

Page 347 of 4770

TOYOTA CAMRY 2000 Service Repair Manual Diagnosis Inspection (Normal Mode)
MALFUNCTION INDICATOR LAMP CHECK
1. The Malfunction indicator lamp will come on when the
ignition switch is turned ON and the engine is not run±
ning.
HINT: I

Page 348 of 4770

TOYOTA CAMRY 2000 Service Repair Manual Diagnosis Inspection (Test Mode)
Compared to the normal mode, the test mode has high sens±
ing ability to detect malfunctions.
It can also detect malfunctions in the starter signal circuit, the
IDL c

Diagnosis Inspection (Test Mode)
Compared to the normal mode, the test mode has high sens±
ing ability to detect malfunctions.
It can also detect malfunctions in the starter signal circuit, the
IDL contact signal of the throttle position sensor, air condi±
tioning signal and Park/Neutral Position switch signal.
Furthermore, the same diagnostic items which are detected in
the normal mode can also be detected in the test mode.
DIAGNOSTIC TROUBLE CODE CHECK
1. Initial conditions.
(a) Battery voltage 11 V or more.
(b) Throttle valve fully closed.
(c) Transmission in neutral position.
(d) Air conditioning switched off.
2. Turn ignition switch off.
3. Using SST, connect terminals TE2 and E1 of data link
connector 1 or 2.
SST 09843±18020
4. Turn ignition switch on.
HINT:
wTo confirm that the test mode is operating, check that
the malfunction indicator lamp flashes when the igni±
tion switch is turned to ON.
wIf the malfunction indicator lamp does not flash, pro±
ceed to troubleshooting of the TE2 terminal circuit on
page EG1±430.
5. Start the engine.
6. Simulate the conditions of the malfunction described by
the customer.
7. After the road test, using SST, connect terminals TE1 and
E1 of data link connector 1 or 2.
SST 09843±18020
8. Read the diagnostic trouble code on malfunction indica±
tor lamp on the combination meter (See page EG1±297).
9. After completing the check, disconnect terminals TE1,
TE2 and E1, and turn off the display.
HINT:
wThe test mode will not start if terminals TE2 and E1 are
connected after the ignition switch is turned on.
wWhen vehicle speed is 3 mph (5 km/h) or below,
diagnostic trouble code ª42º (Vehicle speed signal) is
output, but this is not abnormal.
wWhen the engine is not cranked, diagnostic trouble
code ª43º (Starter signal) output, but this is not ab±
normal.
wWhen the automatic transmission shift lever is in the
ªDº, ª2º, ªLº or ªRº shift position, or when the air
conditioning is on or when the accelerator pedal is
depressed, code ª51º (Switch condition signal) is
output, but this is not abnormal.
± 5S±FE ENGINE DIAGNOSIS SYSTEMEG1±298

Page 349 of 4770

TOYOTA CAMRY 2000 Service Repair Manual ECM DATA MONITOR USING TOYOTA
HAND±HELD TESTER
1. Hook up the TOYOTA hand±held tester to the D LC2.
2. Monitor the ECM data by following the prompts on the
tester screen.
HINT: TOYOTA hand±held tes

ECM DATA MONITOR USING TOYOTA
HAND±HELD TESTER
1. Hook up the TOYOTA hand±held tester to the D LC2.
2. Monitor the ECM data by following the prompts on the
tester screen.
HINT: TOYOTA hand±held tester has a ªSnapshotº
function which records the monitored data.
Please refer to the TOYOTA hand±held tester operator's
manual for further details.
ECM TERMINAL VALUES MEASUREMENT
USING TOYOTA BREAK±OUT±BOX AND
TOYOTA HAND±HELD TESTER
1. Hook up the TOYOTA break±out±box and TOYOTA
hand±held tester to the vehicle.
2. Read the ECM input/output values by following the
prompts on the tester screen.
HINT: TOYOTA hand±held tester has ªSnapshotº func±
tion. This records the measured values and is effective in
the diagnosis of intermittent problems.
Please refer to the TOYOTA hand±held tester/Toyota
break±out±box operator's manual for further details.
DIAGNOSTIC TROUBLE CODE CLEARANCE
1. After repair of the trouble areas, the diagnostic trouble
code retained in the ECM memory must be cleared out by
removing the E F I fuse (15A) from J/13 No. 2 for 10 seconds or
more, with the ignition switch OFF.
HINT:
wCancellation can also be done by removing the battery
negative (±) terminal, but in this case, other memory
systems (clock, etc.) will also be cancelled out.
wIf it is necessary to work on engine components requir±
ing removal of the battery terminal, a check must first
be made to see if a diagnostic trouble code has been
recorded.
2. After cancellation, road test the vehicle to check that a
normal code is now read on the malfunction indicator
lamp.
If the same diagnostic trouble code appears, it indicates
that the trouble area has not been repaired thoroughly.
DIAGNOSTIC TROUBLE CODE CHECK
USING TOYOTA HAND±HELD TESTER
1. Hook up the TOYOTA hand±held tester to the DLC2.
2. Read the diagnostic trouble codes by following the
prompts on the tester screen.
Please refer to the TOYOTA hand±held tester operator's
manual for further details.
± 5S±FE ENGINEDIAGNOSIS SYSTEMEG1±299

Page 350 of 4770

TOYOTA CAMRY 2000 Service Repair Manual DIAGNOSTIC TROUBLE CODE CHART
HINT: Parameters listed in the chart may not be exactly same as your reading due to type of the in-
struments or other factors.
No G signal to ECM while NE signal is inpu

Page 351 of 4770

TOYOTA CAMRY 2000 Service Repair Manual If a malfunction code is displayed during the diagnostic trouble code check in test mode, check the circuit
for that code listed in the table below (Proceed to the page given for that circuit).
wOpen

Page 352 of 4770

TOYOTA CAMRY 2000 Service Repair Manual Main oxygen sensor signal voltage is reduced to between 0.35 V
and 0.70 V for 60 sec. under conditions (a) ~ (d).
(2 trip detection logic) *5
(a) Engine coolant temp.: 80C (176F) or more.

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