Table of Contents
Advertisement
PGM-FI System
DTC Troubleshooting (cont'd)
DTC P0108: MAP Sensor Circuit High Voltage
1. Start the engine. Hold the engine at 3,000 rpm with
no load (in park or neutral) until the radiator fan
comes on, then let it idle.
2. Check the MAP with the scan tool.
Is approx.
101 kPa (780 mmHg, 30 in.Hg) or
higher
or approx. 2.9 V
indicated?
Y E S - G o to step 3.
NO —Intermittent failure, system is OK at this time.
Check for poor connections or loose wires at the
MAP sensor and the E C M / P C M . •
3. Turn the ignition switch OFF.
4. Disconnect the MAP sensor connector.
5. Install a jumper wire between MAP sensor 3P
connector terminals No. 2 and No. 3.
MAP S E N S O R 3P C O N N E C T O R
S G I (GRN/WHT)
MAP (RED/GRN)
J U M P E R W I R E
W i r e s i d e o f f e m a l e t e r m i n a l s
6. Turn the ignition switch ON (II).
7. Check the MAP with the scan tool.
Is approx.
159 kPa (1,190 mmHg, 47in.Hg)
or
higher or 4.49 V or higher
indicated?
Y E S - G o to step 8.
NO —Replace the MAP sensor. •
8. Remove the jumper wire.
9. Measure voltage between MAP sensor 3P
connector terminals No. 1 and No. 2.
M A P S E N S O R 3 P C O N N E C T O R
V C C 1
( Y E L / R E D )
S G I
( G R N / W H T )
W i r e s i d e o f f e m a l e t e r m i n a l s
Is there approx. 5 V?
Y E S - G o to step 10.
NO—Repair open in the wire between the E C M /
PCM (C7) and the MAP sensor.B
10. Turn the ignition switch OFF.
11. Install a jumper wire on ECM/PCM connector
terminals between C7 and C17.
E C M / P C M C O N N E C T O R C ( 3 1 P )
S G I
( G R N / W H T )
M A P ( R E D / G R N )
1
2 3
/
5 6
J
8 9 10
/ /
13
1 4
15
16 17 18 19 20 21
/
2 3
2 4
2 5
26 27 28
29
3 0
/
J U M P E R
W I R E
W i r e s i d e o f f e m a l e t e r m i n a l s
12. Turn the ignition switch ON (II).
13. Check the MAP with the scan tool.
Is approx.
159 kPa (1,190 mmHg, 47 in.Hg) or
higher or 4.49 V or higher
indicated?
Y E S - S u b s t i t u t e a known-good ECM/PCM and
recheck (see page 11-5). If normal MAP readings are
indicated, replace the original ECM/PCM. •
NO —Repair open in the wire between the E C M /
PCM (C17) and the MAP sensor.B
11-48
Advertisement
Table of Contents
Troubleshooting
