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BE-41
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
BE2K4-02
INSPECTION
1. INSPECT LIGHT CONTROL SWITCH CONTINUITY
High
Switch Position Tester Connection Specified Condition
HEAD Low OFF - No continuity
TAIL 14 - 16 Continuity
TAIL
HEAD 13 - 14 - 16 Continuity
OFF
If the continuity is not as specified, replace the switch.
Flash 2. INSPECT HEADLIGHT DIMMER SWITCH CONTINU-
ITY
8 7 Switch Position Tester Connection Specified Condition
Flash 7 - 8 - 16 Continuity
Low beam 16 - 17 Continuity
High beam 7 - 16 Continuity
If the continuity is not as specified, replace the switch.
17 16 14 13
I04626
3. INSPECT HEADLIGHT RELAY (Marking: HEAD
1 (Double Cab) or H-LP (Except Double Cab)) CONTI-
2
NUITY
3 5
Tester Connection Specified Condition
5 3-5 No continuity
2 1
Continuity
3 3-5
(When battery voltage is applied to terminals 1 and 2)
If the continuity is not as specified, replace the relay.
N14863
4. Double cab:
1 INSPECT TAILLIGHT RELAY CONTINUITY
2
Tester Connection Specified Condition
3 5
3-5 No continuity
5
Continuity
2 1 3-5
(When battery voltage is applied to terminals 1 and 2)
3
If the continuity is not as specified, replace the relay.
N14863
5. w/ Daytime running light:
5 INSPECT DIMMER RELAY CONTINUITY
1 2 Tester Connection Specified Condition
3-4 Continuity
No continuity
3-4
(When battery voltage is applied to terminals 1 and 2)
4 3-5 No continuity
3 Continuity
I24627
3-5
(When battery voltage is applied to terminals 1 and 2)
BE-42
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
If the continuity is not as specified, replace the switch.
6. Except double cab (w/ Day time running light):
CHECK INTEGRATION RELAY (DRIVER SIDE J/B)
CIRCUIT
(a) Disconnect the 1I, 1J, 1K, 1M and 1N driver side J/B con-
nectors, and check the voltage or continuity of each termi-
nal of the wire harness side connectors.
Driver Side J/B
1N
1I
1K
1J 1N
1M 1I
1K 1J 1M
I25448
Tester Connection Condition Specified Condition
1I-2 - Body ground Ignition switch LOCK or ACC No voltage
1I-2 - Body ground Ignition switch ON or START 10 - 14 V
1J-8 - Body ground Constant Continuity
1K-2 - Body ground Constant 10 - 14 V
1K-5 - Body ground Constant 10 - 14 V
1M-5 - Body ground Fog light ON 10 - 14 V
1M-5 - Body ground Fog light OFF Below 1 V
1M-6 - Body ground Constant Continuity
BE-43
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
Tester Connection Condition Specified Condition
1N-1 - Body ground Parking lever released No continuity
1N-1 - Body ground Parking lever pulled up Continuity
1N-2 - Body ground Engine Stop No voltage
1N-2 - Body ground Engine Running 10 - 14 V
1N-3 - Body ground Light control switch OFF or TAIL No continuity
1N-3 - Body ground Light control switch HEAD Continuity
1N-4 - Body ground Light control switch OFF or TAIL No continuity
1N-4 - Body ground Light control switch HEAD Continuity
1N-7 - Body ground Headlight dimmer switch low beam No continuity
1N-7 - Body ground Headlight dimmer switch high beam or flash Continuity
1N-8 - Body ground Headlight dimmer switch low or high beam No continuity
1N-8 - Body ground Headlight dimmer switch flash Continuity
1N-13 - Body ground Brake fluid level warning light OFF No continuity
1N-13 - Body ground Brake fluid level warning light ON Continuity
1N-24 - Body ground Constant Continuity
If the result is not as specified, there may be a malfunction on
the wire harness side.
(b) Reconnect the 1I, 1J, 1K, 1M and 1N J/B connectors, and
check the voltage of each terminal of the connectors.
Tester Connection Condition Specified Condition
1M-3 - Body ground Light control switch TAIL or HEAD 10 - 14 V
1M-3 - Body ground Light control switch OFF Below 1 V
1N-15 - Body ground Light control switch TAIL or HEAD 10 - 14 V
1N-15 - Body ground Light control switch OFF Below 1 V
If the result is not as specified, the integration relay (drive side
J/B) may have a malfunction.
1
Driver Side J/B (c) Remove the integration relay from the driver side J/B, and
2
3 check the voltage or continuity of each terminal on the J/B
4
5
6
side (see page BE-128).
7
8
9
10
11
12
13
14
15
I11896
BE-44
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
7. Except double cab (Daytime running light):
CHECK INTEGRATION RELAY (DRIVER SIDE J/B)
CIRCUIT
Disconnect the 1L driver side J/B connector, and check the volt-
age or continuity of each terminal of the wire harness side con-
nector.
Driver Side J/B
1L
1L
I24716
Tester Connection Condition Specified Condition
1L-5 - Body ground Light control switch OFF No continuity
1L-5 - Body ground Light control switch TAIL or HEAD Continuity
1L-6 - Body ground Constant 10 - 14 V
1L-13 - Body ground Light control switch OFF No continuity
1L-13 - Body ground Light control switch TAIL or HEAD Continuity
If the result is as specified, there may be a malfunction on the
wire harness side.
BE-45
BODY ELECTRICAL - HEADLIGHT AND TAILLIGHT SYSTEM
8. INSPECT DAYTIME RUNNING LIGHT NO. 4 RELAY
5 (Marking: DRL NO. 4) CONTINUITY
1 2
Tester Connection Specified Condition
3-5 No continuity
Continuity
3-5
(When battery voltage is applied to terminals 1 and 2)
If the continuity is not as specified, replace the relay.
3
I24626
9. INSPECT DAYTIME RUNNING LIGHT RESISTOR
Tester Condition Specified Condition
1-2 Approx. 337 m
If the result is not as specified, replace the resistor.
Z07683
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