EN(H4DOTC)(diag)-71
Diagnostics for Engine Starting Failure
ENGINE (DIAGNOSTICS)
8
CHECK STARTER RELAY.
1) Connect the battery to starter relay termi-
nals No. 11 and No. 12.
2) Measure the resistance between starter
relay terminals.
Terminals
No. 9 — No. 10:
Is the resistance less than 1
:
? Go to step
9
.
Replace the starter
relay.
9
CHECK HARNESS BETWEEN ECM AND
STARTER RELAY CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the resistance of harness between
ECM and starter relay connector.
Connector & terminal
(B136) No. 20 — (B225) No. 12:
Is the resistance less than 1
:
? Go to step
10
.
Repair the open
circuit of harness
between ECM and
starter relay con-
nector.
10
CHECK TRANSMISSION TYPE.
Is the transmission type AT?
Go to step
14
.
Go to step
11
.
11
CHECK INPUT VOLTAGE OF CLUTCH
START SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the clutch start switch connec-
tor.
3) Turn the ignition switch to START.
4) Measure the voltage between the clutch
start switch connector and chassis ground.
Connector & terminal
(B106) No. 1 (+) — Chassis ground (–):
Is the voltage 10 V or more?
Go to step
12
.
Repair open circuit
or short circuit to
ground in harness
between ignition
switch connector
and clutch start
switch connector.
12
CHECK CLUTCH START SWITCH.
Measure the resistance between clutch start
switch terminals while depressing the clutch
pedal.
Terminals
No. 1 — No. 2:
Is the resistance less than 1
:
? Go to step
13
.
Replace the clutch
start switch. <Ref.
to CL-27, Clutch
Switch.>
13
CHECK HARNESS BETWEEN ECM AND
CLUTCH START SWITCH.
Measure the resistance of harness between
ECM and clutch start switch connector.
Connector & terminal
(B136) No. 32 — (B106) No. 2:
Is the resistance less than 1
:
? Check the engine
control module
(ECM) power sup-
ply and ground
line. <Ref. to
EN(H4DOTC)(dia
g)-73, CHECK
POWER SUPPLY
AND GROUND
LINE OF ENGINE
CONTROL MOD-
ULE (ECM), Diag-
nostics for Engine
Starting Failure.>
Repair open circuit
or short circuit to
ground in harness
between ECM and
clutch start switch
connector.
14
CHECK HARNESS BETWEEN ECM AND IG-
NITION SWITCH.
1) Turn the ignition switch to OFF.
2) Measure the resistance of harness between
the ECM and ignition switch connector.
Connector & terminal
(B136) No. 32 — (B72) No. 6:
Is the resistance less than 1
:
? Go to step
15
.
Repair open circuit
or short circuit to
ground in harness
between ECM and
ignition switch con-
nector.
Step
Check
Yes
No
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