2003 HONDA CIVIC Ignition switch

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Page 289 of 1139

HONDA CIVIC 2003 7.G Workshop Manual PGM-FISystem
DTC Troubleshooting (contdl
14. Measure voltage between ECM connector terminal
E7 and body ground.
ECM CONNECTOR E 13lPI
MRLYIBEO/YEL)
Wire side of female terminals
ls there battery volt

Page 290 of 1139

HONDA CIVIC 2003 7.G Workshop Manual DTG Pl106: BARO Sensor Range/Perfomance
Problem
1. Reset the ECM (see page 11-4).
2. Start the engine. Hold the engine at 3,000 rpm with
no load (in neutral) until the radiator fan comes on,
then let

Page 291 of 1139

HONDA CIVIC 2003 7.G Workshop Manual PGM-FI System
(
(
DTG Troubleshooting (contdl
DTC Pl157: AyF Sensor (Sensor 1) Range/
Performance Problem
1. Resetthe ECIM (see page 11-4).
2. Start the engine.
ls DTC Pl157 indicated?
YES-Go to ste

Page 292 of 1139

HONDA CIVIC 2003 7.G Workshop Manual 8. Check for continuity between ECM connector
terminals 46 and body ground.
ECM CONNECTOR A 131P}
Wire side ol lemale terminals
ls there continuity?
YES-Repair open in the wire between the AyF
sensor

Page 293 of 1139

HONDA CIVIC 2003 7.G Workshop Manual PGM-FI System
(
a
DTC Troubleshooting (contd)
6. Substitute a known-good AyF sensor (Sensor 1)and
recheck.
Is DTC P1158 ind icated?
YES Update the ECM if it does not have the latest
software, or sub

Page 296 of 1139

HONDA CIVIC 2003 7.G Workshop Manual DTC Pl166: AyF Sensor (Sensor 1) Heater
Circuit Malfunction
1. Resetthe ECM (see page 11-4).
2. Start the engine.
ls DTC P1166 indicated?
YES-Go to step 3.
NO-lntermittent failure, system is OK at th

Page 297 of 1139

HONDA CIVIC 2003 7.G Workshop Manual PGM-FI System
DTC Troubleshooting (contdl
9. Connect ECM connector terminal EStobodyground with a jumper wire, then measure voltage
between ECM connector terminals A1 and 424.
ECM CONNECTORS
Wire sid

Page 298 of 1139

HONDA CIVIC 2003 7.G Workshop Manual DTC Pl167: AyF Sensor (Sensor 1) Heater
Circuit Malfunction
NOTE: lf DTC P1162 is stored at the same time as DTC
P1167, troubleshoot DTC P1162 first, then troubleshoot
DTC P1167.
1. Resetthe ECI\4 (s