Service Manual

4.32
ELECTRONIC FUEL INJECTION
GENERAL TROUBLESHOOTING
Diagnostic “Blink Codes”
NOTE: The EFI diagnostic mode is intended to
quickly view the cause of the “Check Engine” light.
To recall blink codes (fail codes) from the ECU:
1. Verify the key switch is off and the transmission is in
neutral with the parking brake applied.
2. Turn the key switch ON and OFF 3 times within 5 seconds
and leave the key switch in the ON position on the third
turn. The word “Wait” will appear as the ECU searches for
blink codes.
3. Any “blink codes” stored in the ECU will display a
numerical “blink code”, one at a time, in numerical order,
on the instrument cluster display.
4. The word “End” and/or the number “61” will display after
all of the codes have been displayed or if no codes are
present.
NOTE: To clear codes manually, disconnect the
positive battery lead for 20 seconds.
DIAGNOSTIC “BLINK CODES” CHART
SAE CODE BLINK CODE NAME CHECK ENGINE
P0335 21 Loss of Synchronization Yes
P0122 22 TPS: Open or Short Circuit to Ground Yes
P0123 22 TPS: Short Circuit to Battery Yes
P0601 23 RAM Error: Defective ECU Yes
P0914 25 Transmission Input: Invalid Gear Yes
P0113 41 Intake Air Temp Sensor: Open or Short Circuit to +Sensor Voltage (ECU) Yes
P0112 41 Intake Air Temp Sensor: Short Circuit to Ground Yes
P0117 42 Engine Temperature Sensor Circuit: Short To Ground Yes
P0118 42 Engine Temperature Sensor Circuit: Open or Short to Battery Yes
P0107 45 Barometric Pressure Sensor: Circuit Low Input Yes
P0108 46 Barometric Pressure Sensor: Circuit High Input Yes
P1260 51 Injector 1: Open Load Yes
P0261 51 Injector 1: Short Circuit to Ground Yes
P0262 51 Injector 1: Short Circuit to Battery Yes
P1263 52 Injector 2: Open Load Yes
P0264 52 Injector 2: Short Circuit to Ground Yes
P0265 52 Injector 2: Short Circuit to Battery Yes
P0655 54 Engine Temperature Lamp: Open Load Yes
P1657 54 Engine Temperature Lamp: Short Circuit to Ground Yes
P1658 54 Engine Temperature Lamp: Short Circuit to Battery Yes
P1651 55 Diagnostic Lamp: Open Load Yes
P1652 55 Diagnostic Lamp: Short Circuit to Ground Yes
P1653 55 Diagnostic Lamp: Short Circuit To Battery Yes
P1231 56 Pump Relay: Open Load Yes
P1232 56 Pump Relay: Short Circuit to Ground Yes
P1233 56 Pump Relay: Short Circuit to Battery Yes