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Electrical Troubleshooting
Troubleshooting Flowchart - Barometric Pressure (BARO) Sensor
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. OBD ll Scan Tool lndicatos Code
P1794.
. S e l f - d i a g n o s i s E l i n d i c a t o r
light indicatos Code 13.
Check BAROS S Wire ContinuitY:
1. Turn the ignition switch OFF.
2. Disconnect the 22P connedor
trom the ECM.
3. Check for continuity between
t h e 8 2 t e r m i n a l o t t h e T C M
connector and C21 terminal of
the ECM connector.
PGsible cau3€
' Short ot oDen in LT GRN wite
betwoen the 82 lcrminal and
ihe ECM
. Faulty baromotric Prelsure
IBAROI ignsol
N O T E : T h o B A F O s e n s o r i s
built into the ECM.
V q J
WIRE SIDE OF FEMALE TERMINALS
Measure VREF Volttge:
1. Turn the ignition switch OFF.
2. Disconnect the A (26P) and B
( 2 2 P ) c o n n e c t o r s f r o m t h e
TCM.
3. Turn the ignition switch ON {ll}.
4. Measure the voltage between
the 820 and 413 or 426 termi-
nals,
Repair shon or oPen in the wite
betwcon the 820 tsrminal and
tho EcM.
ls there approx.5 V?
Repair open in the wiro betwoon
the TcM and ECM.
ls there continuity?
To page 14-75
14-74
V !
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Table of Contents
Troubleshooting
